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电力系统继电保护技术中英文对照外文翻译文献

电力系统继电保护技术中英文对照外文翻译文献
电力系统继电保护技术中英文对照外文翻译文献

中英文对照外文翻译文献

(文档含英文原文和中文翻译)

原文:

Relay protection development present situation

Abstract: Reviewed our country electrical power system relay protection technological development process, has outlined the microcomputer relay protection technology achievement, propose the future relay protection technological development tendency will be: Computerizes, networked, protects, the control, the survey, the data communication integration and the artificial intellectualization.

Key word: relay protection, present situation development, future development

1 relay protection development present situation

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The electrical power system rapid development to the relay protection propose unceasingly the new request, the electronic technology, computer technology and the communication rapid development unceasingly has poured into the new vigor for the relay protection technology development, therefore, the relay protection technology is advantageous, has completed the development 4 historical stage in more than 40 years time.

After the founding of the nation, our country relay protection discipline, the relay protection design, the relay manufacture industry and the relay protection technical team grows out of nothing, has passed through the path in about 10 years which advanced countries half century passes through. The 50's, our country engineers and technicians creatively absorption, the digestion, have grasped the overseas advanced relay protection equipment performance and the movement technology , completed to have the deep relay protection theory attainments and the rich movement experience relay protection technical team, and grew the instruction function to the national relay protection technical team's establishment. The relay factory introduction has digested at that time the overseas advanced relay manufacture technology, has established our country relay manufacturing industry. Thus our country has completed the relay protection research, the design, the manufacture, the movement and the teaching complete system in the 60's. This is a time which the mechanical and electrical relay protection prospers, was our countries relay protection technology development has laid the solid foundation.

From the end of the 50's, the transistor relay protection was starting to study. In the 60's to the 80's,it is the times which the transistor relay protection vigorous development and widely used. Tianjin University and the Nanjing electric power automation plant cooperation research 500kV transistor direction high frequency protection the transistor high frequency block system which develops with the Nanjing electric power automation research institute is away from the protection, moves on the Gezhou Dam 500kV line , finished the 500kV line protection to depend upon completely from the overseas import time.

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From the 70's, start based on the integration operational amplifier integrated circuit protection to study. Has formed the completely series to at the end of 80's integrated circuit protection, substitutes for the transistor protection gradually. The development, the production, the application the integrated circuit protects which to the beginning of the 90's still were in the dominant position, this was the integrated circuit protection time. The integrated electricity road work frequency conversion quantity direction develops which in this aspect Nanjing electric power automation research institute high frequency protected the vital role, the Tianjin University and the Nanjing electric power automation plant cooperation development integrated circuit phase voltage compensated the type direction high frequency protection also moves in multi- strip 220kV and on the 500kV line.

Our country namely started the computer relay protection research from the end of the 70's, the institutions of higher learning and the scientific research courtyard institute forerunner's function. Huazhong University of Science and Technology, southeast the university, the North China electric power institute, the Xian Jiao tong University, the Tianjin University, Shanghai Jiao tong University, the Chongqing University and the Nanjing electric power automation research institute one after another has all developed the different principle, the different pattern microcomputer protective device. In 1984 the original North China electric power institute developed the transmission line microcomputer protective device first through the evaluation and in the system the find application, had opened in our country relay protection history the new page, protect the promotion for the microcomputer to pave the way. In the host equipment protection aspect, the generator which southeast the university and Huazhong University of Science and Technology develop loses magnetism protection, the generator protection and the generator? Bank of transformers protection also one after another in 1989、1994 through appraisal and investment movement. The Nanjing electric power automation research institute develops microcomputer line protective device also in 1991 through appraisal. The Tianjin University and the Nanjing electric power automation plant cooperation development

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microcomputer phase voltage compensated the type direction high frequency protection, the Xian Jiao tong University and the Xuchang Relay Factory cooperation development positive sequence breakdown component direction high frequency protection also one after another in 1993, in 1996 through the appraisal. Here, the different principle, the different type microcomputer line and the host equipment protect unique, provided one batch of new generation of performance for the electrical power system fine, the function has been complete, the work reliable relay protection installment. Along with the microcomputer protective device research, in microcomputer aspect and so on protection software, algorithm has also yielded the very many theories result. May say started our country relay protection technology from the 90's to enter the time which the microcomputer protected.

2 relay protections future development

The relay protection technology future the tendency will be to computerizes, networked, the intellectualization, will protect, the control, the survey and the data communication integration development.

2.1 computerizes

Along with the computer hardware swift and violent development, the microcomputer protection hardware also unceasingly is developing. The original North China electric power institute develops the microcomputer line protection hardware has experienced 3 development phases: Is published from 8 lists CPU structure microcomputer protection, does not develop to 5 years time to the multi- CPU structure, latter developed to the main line does not leave the module the big modular structure, the performance enhances greatly, obtained the widespread application. Huazhong University of Science and Technology develops the microcomputer protection also is from 8 CPU, develops to take the labor controlling machine core partially as the foundation 32 microcomputers protection.

The Nanjing electric power automation research institute from the very beginning has developed 16 CPU is the foundation microcomputer line protection,

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obtained the big area promotion, at present also is studying 32 protections hardware system. Southeast the university develops the microcomputer host equipment protects the hardware also passed through improved and the enhancement many times. The Tianjin University from the very beginning is the development take more than 16 CPU as the foundation microcomputer line protection, in 1988 namely started to study take 32 digital signals processor (DSP) as the foundation protection, the control, the survey integration microcomputer installment, at present cooperated with the Zhuhai automatic equipment company develops one kind of function complete 32 big modules, a module was a minicomputer. Uses 32 microcomputers chips only to focus by no means on the precision, because of the precision the a/d switch resolution limit, is surpassed time 16 all is accepts with difficulty in the conversion rate and the cost aspect; 32 microcomputers chips have the very high integration rate more importantly, very high operating frequency and computation speed, very big addressing space, rich command system and many inputs outlet. The CPU register, the data bus, the address bus all are 32, has the memory management function, the memory protection function and the duty transformation function, and (cache) and the floating number part all integrates the high speed buffer in CPU.

The electrical power system the request which protects to the microcomputer enhances unceasingly, besides protection basic function, but also should have the large capacity breakdown information and the data long-term storage space, the fast data processing function, the formidable traffic capacity, with other protections, the control device and dispatches the networking by to share the entire system data, the information and the network resources ability, the higher order language programming and so on. This requests the microcomputer protective device to have is equal to a pc machine function. In the computer protection development initial period, once conceived has made the relay protection installment with a minicomputer. At that time because the small machine volume big, the cost high, the reliability was bad, this tentative plan was not realistic. Now, with the microcomputer protective device size similar labor controlling machine function, the speed, the storage capacity greatly

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has surpassed the same year small machine, therefore, made the relay protection with complete set labor controlling machine the opportunity already to be mature, this will be one of development directions which the microcomputer protected. The Tianjin University has developed the relay protection installment which Cheng Yong tong microcomputer protective device structure quite same not less than one kind of labor controlling machine performs to change artificially becomes. This kind of equipment merit includes: has the 486pc machine complete function, can satisfy each kind of function request which will protect to current and the future microcomputer. size and structure and present microcomputer protective device similar, the craft excellent, quakeproof, guards against has been hot, guards against electromagnetic interference ability, may move in the very severe working conditions, the cost may accept. Uses the STD main line or the pc main line, the hardware modulation, may select the different module willfully regarding the different protection, the disposition nimble, and is easy to expand.

Relay protection installment, computerizes is the irreversible development tendency. How but to satisfies the electrical power system request well, how further enhances the relay protection the reliability, how obtains the bigger economic efficiency and the social efficiency, still must conduct specifically the thorough research.

2.2 networked

The computer network has become the information age as the information and the data communication tool the technical prop, caused the human production and the social life appearance has had the radical change. It profoundly is affecting each industry domain, also has provided the powerful means of communication for each industry domain. So far, besides the differential motion protection and the vertical association protection, all relay protections installment all only can respond the protection installment place electricity spirit. The relay protection function also only is restricted in the excision breakdown part, reduces the accident to affect the scope. This mainly is because lacks the powerful data communication method. Overseas

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already had proposed the system protection concept, this in mainly referred to the safe automatic device at that time. Because the relay protection function not only is restricted in the excision breakdown part and the limit accident affects the scope (this is most important task), but also must guarantee the entire system the security stable movement. This requests each protection unit all to be able to share the entire system the movement and the breakdown information data, each protection unit and the superposition brake gear in analyze this information and in the data foundation the synchronized action, guarantees the system the security stable movement. Obviously, realizes this kind of system protection basic condition is joins the entire system each main equipment protective device with the computer network, that is realization microcomputer protective device networked. This under the current engineering factor is completely possible.

Regarding the general non- system protection, the realization protective device computer networking also has the very big advantage. The relay protection equipment can obtain system failure information more, then to the breakdown nature, the breakdown position judgment and the breakdown distance examination is more accurate. Passed through the very long time to the auto-adapted protection principle research, also has yielded the certain result, but must realize truly protects to the system movement way and the malfunction auto-adapted, must obtain the more systems movement and the breakdown information, only then realization protection computer networked, can achieve this point.

Regarding certain protective device realization computer networking also can enhance the protection the reliability. The Tianjin University in 1993 proposed in view of the future Three Gorges hydroelectric power station 500kv ultrahigh voltage multi-return routes generatrix one kind of distributional generatrix protection principle, developed successfully this kind of equipment initially. Its principle is disperses the traditional central generatrix protection certain (with to protect generatrix to return way to be same) the generatrix protection unit, the dispersible attire is located in on various return routes protection screen, each protection unit

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joins with the computer network, each protection unit only inputs this return route the amperage, after transforms it the digital quantity, transmits through the computer network for other all return routes protection unit, each protection unit acts according to this return route the amperage and other all return routes amperage which obtains from the computer network, carries on the generatrix differential motion protection the computation, if the computed result proof is the generatrix interior breakdown then only jumps the book size return route circuit breaker, Breakdown generatrix isolation. When generatrix area breakdown, each protection unit all calculates for exterior breakdown does not act. This kind the distributional generatrix protection principle which realizes with the computer network has the high reliability compared to the traditional central generatrix protection principle. Because if a protection unit receives the disturbance or the miscalculation when moves by mistake, only can wrongly jump the book size return route, cannot create causes the generatrix entire the malignant accident which excises, this regarding looks like the Three Gorges power plant to have the ultrahigh voltage generatrix the system key position to be extremely important.

By above may know, microcomputer protective device may enhance the protection performance and the reliability greatly, this is the microcomputer protection development inevitable trend.

2.3 protections, control, survey, data communication integrations

In realization relay protection computerizing with under the condition, the protective device is in fact a high performance, the multi-purpose computer, is in an entire electrical power system computer network intelligent terminal. It may gain the electrical power system movement and breakdown any information and the data from the net, also may protect the part which obtains it any information and the data transfer for the network control center or no matter what a terminal. Therefore, each microcomputer protective device not only may complete the relay protection function, moreover in does not have in the breakdown normal operation situation also to be

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possible to complete the survey, the control, the data communication function that is realization protection, control, survey, data communication integration.

At present, in order to survey, the protection and the control need, outdoor transformer substation all equipment, like the transformer, the line and so on the secondary voltage, the electric current all must use the control cable to direct to . Lays the massive control cable not only must massively invest, moreover makes the secondary circuit to be extremely complex. But if the above protection, the control, the survey, the data communication integration computer installation, will install in outdoor transformer substation by the protection device nearby, by the protection device voltage, the amperage is changed into after this installment internal circulation the digital quantity, will deliver through the computer network, then might avoid the massive control cable. If takes the network with the optical fiber the transmission medium, but also may avoid the electromagnetic interference. Now the optical current transformer (OTA) and the optical voltage transformer (OTV) in the research trial stage, future inevitably obtained the application in the electrical power system. In uses OTA and in the OTV situation, the protective device should place is apart from OTA and the OTV recent place, that is should place by the protection device nearby. OTA and the OTV light signal inputs after this integration installment in and transforms the electrical signal, on the one hand serves as the protection the computation judgment; On the other hand took the survey quantity, delivers through the network. May to deliver from through the network by the protection device operation control command this integrated installment, carries out the circuit breaker operation from this the integrated installment. In 1992 the Tianjin University proposed the protection, the control, the survey, the correspondence integration question, and has developed take the tms320c25 digital signal processor (DSP) as a foundation protection, the control, the survey, the data communication integration installment.

2.4 intellectualizations

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In recent years, the artificial intelligence technology like nerve network, the genetic algorithms, the evolution plan, the fuzzy logic and so on all obtained the application in electrical power system each domain, also started in the relay protection domain application research. The nerve network is one non-linear mapping method, very many lists the complex non-linear problem with difficulty which the equation or solves with difficulty, the application nerve network side principle may be easily solved. For example exhibits in the situation in the transmission line two sides systems electric potential angle to occur after the transition resistance short-circuits is a non-linear problem, very difficult correctly to make the breakdown position from the protection the distinction, thus creates moves by mistake or resists to move; If thinks after the network method, passes through the massive breakdowns sample training, so long as the sample centralism has fully considered each kind of situation, then in breaks down time any all may correctly distinguish. Other likes genetic algorithms, the evolution plan and so on also all has its unique solution complex question the ability. May cause the solution speed these artificial intelligence method suitable unions to be quicker? The Tianjin University carries on the nerve network type relay protection from 1996 the research, has yielded the preliminary result. May foresee, the artificial intelligence technology must be able to obtain the application in the relay protection domain, by solves the problem which solves with difficulty with the conventional method.

3 conclusions

Since the founding of China's electric power system protection technology has undergone four times. With the rapid development of power systems and computer technology, communications technology, relay technology faces the further development of the trend. Domestic and international trends in the development of protection technologies: computerization, networking, protection, control, measurement, data communications integration and artificial intelligence, which made protection workers difficult task, but also opened up the activities of vast.

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手机电路图中英文对照

手机电路图中英文对照 手机电路图中英文对照 A A 模拟 AB 地址总线ACCESSORIES 配件ADC 模拟到数字的转换ADDRESS BUS 地址总线 AFC 自动频率控制 AFPCB 音频电路板 AGC 自动增益控制 AGND 模拟地 ALARM 告警 ALERT 振铃 ALRT 铃声电路 ALRT-VCC 振铃器电源 ANTSW 天线开关 AOC-DRIVE 自动功率控制驱动AUDIO 音频 AUX 辅助 AVCC 音频供电 APC 音频处理芯片GSM-LNA275 900MHz低噪声放大器电压() GSM-PINDIODE 功率放大器输出到匹配电路的切换控制信号 GSM-SEL 频段切换控制信号之一(900 MHz) G-TX-VCO 900MHz发射压控振荡器 H Hex 十六进制 Hamonic Filter 谐波滤波器 HAND SET 手持机 HARDWARE 硬件 HOOK 外接免提计算机 HEAD-INT 头戴耳机控制 I Insert Card 插入卡 Initial 初始化 IMSI 国际移动用户识别码 IWF 各种业务功能接口 I/O 输入/输出 ICTRL 供电电流大小控制 IFLO 中频本振 INFRARED RAY 红外线 INT 中断 K KEYBOARD 键盘 KEY 键、键控 KHz 千赫兹 KBC 按键列地址线 L

ANT 天线 AUC 鉴权中心 A/D 模拟/数字转换AUTO 自动 A/L 音频/逻辑板ACCESS 接入 APC 自动功率控制 B BIT 比特 BURST 突发脉冲串BCCH 广播信道 BW 带宽 BUSY 忙 BUS 总线BARRING 限制 BCD 二/十进制码BPF 带通滤波器Block Digram 方框图Backlight 背光LPF 低通滤波器 LCD 液晶显示器 LCD DATA 显示屏数据 LCD EN 显示屏使能 LCD WR 显示屏写入 LINE 连接线、线路 LO 本振 LOCK 锁定 LOGIC 逻辑 LOOP FLITER 环路滤波器 LSPCTRL 扬声器控制 M MIN 移动用户电话识别码 MSN 机械序列号 MIC 拾音器 MS 移动台 MODEM 调制解调器 MENU 菜单 MOD Freq 调制频率 MCLK 主时锺 MDM 调制解调器 MEMORY 存储器 MISO 主机输入从机输出(摩托罗拉)Mixed Second 第二混频 MOBILE 移动 MOD 调制 MODIN 调制I信号负 MODIP 调制I信号正 MODQN 调制Q信号负 MODQP 调制Q信号正 MOSI 主机输出从机输入 MPU 主处理单元(中央处理器)MUC 主控制单元

中英文参考文献格式

中文参考文献格式 参考文献(即引文出处)的类型以单字母方式标识: M——专著,C——论文集,N——报纸文章,J——期刊文章,D——学位论文,R——报告,S——标准,P——专利;对于不属于上述的文献类型,采用字母“Z”标识。 参考文献一律置于文末。其格式为: (一)专著 示例 [1] 张志建.严复思想研究[M]. 桂林:广西师范大学出版社,1989. [2] 马克思恩格斯全集:第1卷[M]. 北京:人民出版社,1956. [3] [英]蔼理士.性心理学[M]. 潘光旦译注.北京:商务印书馆,1997. (二)论文集 示例 [1] 伍蠡甫.西方文论选[C]. 上海:上海译文出版社,1979. [2] 别林斯基.论俄国中篇小说和果戈里君的中篇小说[A]. 伍蠡甫.西方文论选:下册[C]. 上海:上海译文出版社,1979. 凡引专著的页码,加圆括号置于文中序号之后。 (三)报纸文章 示例 [1] 李大伦.经济全球化的重要性[N]. 光明日报,1998-12-27,(3) (四)期刊文章 示例 [1] 郭英德.元明文学史观散论[J]. 北京师范大学学报(社会科学版),1995(3). (五)学位论文 示例 [1] 刘伟.汉字不同视觉识别方式的理论和实证研究[D]. 北京:北京师范大学心理系,1998. (六)报告 示例 [1] 白秀水,刘敢,任保平. 西安金融、人才、技术三大要素市场培育与发展研究[R]. 西安:陕西师范大学西北经济发展研究中心,1998. (七)、对论文正文中某一特定内容的进一步解释或补充说明性的注释,置于本页地脚,前面用圈码标识。 参考文献的类型 根据GB3469-83《文献类型与文献载体代码》规定,以单字母标识: M——专著(含古籍中的史、志论著) C——论文集 N——报纸文章 J——期刊文章 D——学位论文 R——研究报告 S——标准 P——专利 A——专著、论文集中的析出文献 Z——其他未说明的文献类型 电子文献类型以双字母作为标识: DB——数据库 CP——计算机程序 EB——电子公告

中英文论文对照格式

英文论文APA格式 英文论文一些格式要求与国内期刊有所不同。从学术的角度讲,它更加严谨和科学,并且方便电子系统检索和存档。 版面格式

表格 表格的题目格式与正文相同,靠左边,位于表格的上部。题目前加Table后跟数字,表示此文的第几个表格。 表格主体居中,边框粗细采用0.5磅;表格内文字采用Times New Roman,10磅。 举例: Table 1. The capitals, assets and revenue in listed banks

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品质管理中英文对照表学习资料

品质管理 (be) qualfied, up to grade 合格 模具正式投産前確認 3B 5M Man/Machine/Material/Method/Measurement 人力/ 機器/ 材料/ 方法/ 量測 5S整理/ 整頓/ 清掃/ 清潔/ 教養 5WIH When/Where/Who/What/Why/How to 何時/ 何地/ 誰/ 何事/ 為什麼/ 怎麼做7QCTools7 Quality Controls Tools 品管七大手法 8 disciplines 8項回復內容 abnormal handling 異常處理 ACC Accept 允收 acceptance = receive 驗收 ADM Absolute Dimension Measurement全尺寸測量 AIR Artical Inspection report AOD Accept On Deviation 特采 AOQ Average Output Quality平均出廠品質 AOQL Average Output Quality Level 平均出廠品質水準 APP Approve 核准,認可,承認 AQL Acceptable Quality Level 允收品質水準 AR Averary Range全距平均值

Bending 軟體導入 C=0 Critical=0 極嚴重不允許 CAR Corrective action request 改正行動要求改正報告 CP capability index 製造能力指數 CPK capability index of process 模具制程能力參數 CR Critical 極嚴重的 defective product/non-good parts 不良品 defective products 不良品 DFR Defect Failure Rate NG Not Good 不良,不合格 No.Number 數(號) OOBA out of box audit 開箱檢查 OQA output quality assurance 出貨品質保證 OQC output quality control 最終出貨品管 ORT On going Reliability Qualit P/O Waive Purchase Order Waive Packing 包裝 PDCA Plan/ Do /Check /Action 計劃/ 執行/ 檢查/ 總結POC passage quality control 段檢人員

(电力行业)电力系统继电保护中英文对照表

1 Directional protection 方向保护 2 Distance protection 距离保护 3 Over current protection 过流保护 4 Pilot protection 高频保护 5 Differential protection 差动保护 6 Rotor earth-fault protection 转子接地保护 7 Stator earth-fault protection 定子接地保护 8 Over fluxing protection 过励磁保护 9 Back-up protection 后备保护 11 Sequential tripping 顺序跳闸 12 Start up/Pick up 起动 13 Breaker 断路器 14 Disconnecting switch 隔离开关 15 Current transformer 电流互感器 16 Potential transformer 电压互感器

17 Dead zone/Blind spot 死区 18 Vibration/Oscillation 振荡 19 Reliability 可靠性 20 Sensitivity 灵敏性 21 Speed 速动性 22 Selectivity 选择性 23 Step-type distance relay 分段距离继电器 24 Time delay 延时 25 Escapement/interlock/blocking 闭锁 26 Incorrect tripping 误动 27 Phase to phase fault 相间故障 28 Earth fault 接地故障 29 Through- fault 穿越故障 30 Permanent fault 永久性故障 31 Temporary fault

中英文论文参考文献标准格式 超详细

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品质管理缩写英文对照(打印).

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BOM Bill Of Material 材料明细 BTF Build To Forecarst 计划生产 BTO Build To Order 订单生产 BPR Business Process Reengineering 企业流程再造 CPK Capability Of Process 修正过程能力指数 Ca. Capability Of Accuraty 精确度指数 Cp. Capability Of Precesion 精密度指数 CRP Capacity Requirement Planning 产能需求规划 C. OF C. Certificate Of Compliance (质量)承诺证明书CEO Chief Excutive Officer 执行总裁 CQC Companywide Quality Control 全公司范围的品质管理CPM Complaint Per Illion 每百万报怨次 CAD Computer Aided Design 计算机辅助设计 CTO Configuration To Order 客制化生产 CRC Contract Review Committee 合同评审委员会 CIF Cost Inusance And Freight 到岸价格

电力中英文词汇对照

abrasion-Proof component of burner 燃烧器耐磨件arm-brace 撑脚 ash conditoner 调灰器 basket removal panel 元件盒检修护板 BDV blow down valve 疏水阀,排污阀 blind 堵板 blind flange 法兰堵板/盲板法兰(盖calling 催交 campell diagram 叶片埃贝尔曲线 dado 墙裙 daily service fuel tank level switch 日用油缸液位掣 damage 损毁 damper 挡板 damper linkage 风闸联动装置 damper motor 风闸马达 damping mat 阻尼垫 dangerous earth potential 危险性对地电势dashpot 减震器 data transmission 数据传输 DC/AC converter 直流电/交流电转换器dead 不带电 dead weight 自重 decanter 沉淀分取器 declaration of conformity 符合标准声明decommissioning 解除运作;停止运作decompression chamber 减压室 decorative lighting 装饰照明;灯饰 deep bore well pump 深钻井泵 defect liability period 故障修理责任期;保用期 defectograph 钢缆探伤仪;故障检查仪defence in depth 纵深防御 definite sequence 固定次序 deflection 偏转;挠度 deflector sheave 折向轮;导向轮 defrost timer 防霜时间掣defrost unit 溶雪组合 dehumidifier 抽湿机 deleterious substance 有害物质 delivery and return air temperature 送风及回风温度 delivery connection 出油接头 delivery pressure 输出压力 demand side management 用电需求管理demand side management agreement 用电需求管理协议 demand side management programme 用电需求管理计划 dent 凹痕 dental instrument 牙科仪器 dental scaler 洗牙具 Departmental Administration Division [Electrical and Mechanical Services Department] 行政部〔机电工程署〕Departmental Safety Unit [Electrical and Mechanical Services Department] 部门安全组〔机电工程署〕 deposition 沉积物 depth measuring facility 深度测量装置derating factor 额定值降低因子 derust 除锈 descale 清除氧化皮 design current 设计电流 design parameter 设计参数 designated employee 指定雇员 detachable grip 可拆除的夹扣 Details of Branch Offices of Registered Electrical Contractors 注册电业承办商分行详情申报 deterioration 变质;变坏 Deutsche Industrie Normen [DIN] 德国工业标准 device 器件;装置 dewatering 脱水;排水 diaphragm 膜片;隔板 dielectric strength test 电介质强度测试diesel fuel tank 柴油燃料缸 diesel oil 柴油 differential gasket 差速器衬垫differential lock 差速器锁

统计学中英文对照外文翻译文献

中英文对照翻译 (文档含英文原文和中文翻译) Policies for Development of Iron and Steel Industry The iron and steel industry is an important basic industry of the national economy, a supporting industry for realizing the industrialization and an intensive industry in technologies, capital, resources and energy, and its development requires a comprehensive balancing of all kinds of external conditions. China is a big developing country with a comparatively big demand of iron and steel in the economic development for a long time to go. China's production capacity of iron and steel has ranked the first place in the world for many years. However, there is a large gap in terms of the technological level and material consumption of the iron and steel industry compared with the international advanced level, so the focus of development for the future shall be put on technical upgrading and structural adjustment. In order to enhance the whole technical level of the iron and steel industry, promote the structural adjustment, improve the industrial layout, develop a recycling economy, lower the consumption of materials and energy, pay attention to the environmental protection, raise the comprehensive competitive capacity of enterprises, realize the industrial upgrading, and develop the iron and steel industry into an industry with

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