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动力专业英语作业(官贞珍)

动力专业英语作业(官贞珍)
动力专业英语作业(官贞珍)

动力专业英语

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任课教师:官贞珍

第一章Engineering thermodynamics作业Chapter 1 homework

1. 中英互译Chinese-English Translation

(1)热力学

(2)高温热源

(3)动能

(4)过热蒸汽

(5)汽轮机叶片

(6)reversible process

(7)Specific enthalpy

(8)Convergent divergent nozzle

(9)steady flow energy balance

(10)critical pressure

2. 用英语简述朗肯循环中的四个理想的基本热力过程briefly describe the Four ideal basic thermodynamic processes of the Rankine cycle in English

图1.朗肯循环Fig1. T-s diagram of a typical Rankine cycle

The process 1-2:

The process 2-3

The process 3-4

The process 4-1

3. 英译汉English to Chinese translation

内容见教材15页第三段。Please see the contents in the third paragraph on page 15 in your textbook.

The use of reheating process is very common in modern steam power plant. ……, and the reheat temperature is frequently equal to the temperature of the steam leaving the boiler.

第二章Fluid mechanics作业Chapter 2 homework

1. 中英互译Chinese-English Translation

(1)速度梯度

(2)一维稳定流动

(3)湍流

(4)处于平衡状态

(5)速度梯度

(6)湍流

(7)运动粘度

(8)摩擦系数

(9)阻力

(10)牛顿流体

(11)linear relation

(12)mechanical energy

(13)shear stresses

(14)Reynolds number

(15)turbulent flow

(16)friction head loss

(17)Bernoulli’s equation

(18)boundary-layer separation

(19)sudden contraction

(20)minor losses

2. 英译汉English to Chinese translation

内容见教材21页第四段。Please see the contents in the fourth paragraph on page 21 in your textbook.

Fluid flow can be steady or nonsteady. ……. In the case of turbulent flow, such as rapids or a waterfall, the velocities vary erratically from point to point as well as from time to time.

第三章Heat transfer作业Chapter 3 homework

1. 课后的单词和词组抄写2遍(含中英文)Write out Words and Expressions at the end of Chapter 3 two times.

2.英译汉English to Chinese translation

内容见教材37页第三段。Please see the contents in the third paragraph on page 37 in your textbook.

In the film condensation process the surface is completely blanketed by a liquid film, heat transfer necessary……. In fact, heat transfer coefficients in drop-wise condensation may be as much as 10 times higher than in film condensation.

第四章Heat exchangers作业Chapter 4 homework

1. 中英互译Chinese-English Translation

(1)同心套管式

(2)管式换热器

(3)壳管式

(4)紧凑式换热器

(5)导热系数

(6)总换热系数

(7)顺流

(8)对数平均温差

(9)传热单元数

(10)换热器效能

(11)fluidized bed

(12)spiral plate heat exchanger

(13)plate-fin

(14)convection coefficient

(15)counter flow

2.英译汉English to Chinese translation

内容见教材62页倒数第一段(包括△T m公式)。Please see the contents in the first paragraph from the bottom on page 62 in your textbook (including the expression of △T m on page 63).

As heat flows from the hotter to the colder fluid, the temperatures of fluids in a heat exchanger…….where △T m=…….is the logarithmic mean temperature difference (LMTD).

第五章Boiler作业Chapter 5 homework

1. 中英互译Chinese-English Translation

(1)蒸汽发生器

(2)水冷壁

(3)省煤器

(4)空气预热器

(5)超超临界机组

(6)燃煤电厂

(7)高位/低位热值

(8)灰分

(9)自然循环锅炉

(10)强制循环锅炉

(11)下降管

(12)给水温度

(13)汽轮发电机

(14)送风机

(15)煤粉

(16)风煤比

(17)二次风

(18)对流过热器

(19)燃烧效率

(20)湿式洗涤器

(21)saturation temperature

(22)central electric power station

(23)bituminous coal

(24)moisture content

(25)ash fusion temperature

(26)density difference

(27)frictional resistance

(28)once-through boiler

(29)boiler furnace

(30)dew point of water vapor

(31)air pollution control system

(32)induced-draft fan

(33)softening temperature

(34)primary air fan

(35)molten state

(36)refractory material

(37)dry-bottom furnace

(38)gas exit velocity

(39)deaerating heater

(40)waste heat recovery boiler

2.英译汉English to Chinese translation

内容见教材68页前2段(第一段和第二段)。Please see the contents in the first two paragraphs (the first and second paragraphs ) on page 68 in your textbook.

The steam generator frequently called the boiler……. These include the surfaces of reheaters, economizers, and air-preheaters.

Boilers may be classified into three categories according to their applications.……. In this chapter attention is only given to the boilers used for electric power generation.

第六章Turbine作业Chapter 6 homework

1. 课后的单词和词组抄写2遍(含中英文)Write out Words and Expressions at the end of Chapter 6 two times.

2. 用英语写出典型的汽轮机单轴三缸四排汽布置图中各设备的名称Write drown each device name in the typical single-axis, three-cylinder, four-exhaust steam turbine layout in English.

图2.汽轮机单轴三缸四排汽布置示意图

Fig1.Schematic diagram of single-axis, three-cylinder, four-exhaust steam turbine layout 3.英译汉English to Chinese translation

(1)内容见教材106页倒数第一段。Please see the contents in the first paragraph from the bottom on page 107 in your textbook.

A steam turbine operates by converting the thermal energy of steam into kinetic energy and then into mechanical energy…, high pressure, medium pressure turbines, and low pressure turbines.

(2)内容见教材123页倒数第二段。Please see the contents in the second paragraph from the bottom on page 123 in your textbook.

Combustors, sometimes referred to as combustion chambers…, excess air is used to cool the combustion products to the turbine inlet design temperature.

第七章Refrigeration cycles and air conditioning作业Chapter 7 homework

1. 课后的单词和词组抄写2遍(含中英文)Write out Words and Expressions at the end of Chapter 6 two times.

2.英译汉English to Chinese translation

(1)内容见教材151页第三段。Please see the contents in the third paragraph on page 151 in your textbook.

The objective of an air conditioning system is to provide a comfortable environment for an occupant of a residential…. Demands for close control of the environment required new approaches for HV AC systems.

第八章Nuclear and renewable energy作业Chapter 8 homework

1. 中英互译Chinese-English Translation

(1)可再生能源

(2)核反应堆

(3)热核聚变

(4)压水堆

(5)热应力

(6)慢化剂

(7)核电厂

(8)可再生能源

(9)水力发电

(10)太阳技术

(11)nuclear energy

(12)boiling-water reactor (BWR)

(13)thermal shield

(14)hydrogen bomb

(15)breeder reactor

(16)bioenergy electricity generation technology

(17)Stirling engine

(18)ocean energy technologies

2.英译汉English to Chinese translation

(1)内容见教材169页倒数第一段。Please see the contents in the first paragraph from the bottom on page 169 in your textbook.

A reactor coolant system is usually designed with two or more closed coolant loops connected to the PWR… The generator shell is usually constructed of low alloy steel while the heat transfer tubes are made of inconel material.

第九章Emission control in power plant作业Chapter 9 homework

1. 复习第九章课后单词和词组have a review of Words and Expressions at the end of Chapter 9

2.复习课文,准备期末考试review your textbook to prepare for the final exam

英语作业及答案

下面的范文中有很多错误,请找出形容词与副词的混淆、冠词的遗漏和误用、介词和代词的误用等错误,并检查句子的完整性、单词拼写、主谓的一致性、动词和现在分词是否混淆、复数形式、动词的时态、词汇选择、词性、单词的顺序等问题。 (几乎每个句子都有错误) An university education is a goal of many high school students. Some students want to go into a profession that requires an university degree. But there are other professions that do not require a degree, but require certification from a technological college. The reasons why students make decisions to go to technical college instead of university probably have a lot to do with their choice of career, their own academic abilities and their financial situation. First of all, students make their choices for post-secondary education based on the fields that interest them. A student who is interested in medicine might decide to university, into a pre-med program to prepare to become a doctor, or they might go to nursing school or a nursing program in a technical college. Some career choices offer a choice of educational route. The university route is usually more intense and takes longer. For example, an interior designer might take a one or two year program at a college, or choose to do the degree program as a part of the architectural department at a university. Other career choices involve certification that is available at a college, like broadcast journal or

土木专业英语翻译作业

桂林理工大学土木与建筑工程学院 土木工程专业英语外文翻译,中文翻译 姓名:马凤志 专业:土木应用 班级:10级9班 学号:3100510939

原文

中文翻译 The Influence of Concrete Compaction on the Strength of Concrete Filled Steel Tubes 压实混凝土对混凝土强度的影响 Lin-Hai Han School of Civil Engineering, Harbin University of Civil Engineering and Architecture, Haihe Road 202, PO Box 689, Harbin 150090, P.R. China 韩林海,哈尔滨建筑大学,土木与建筑工程学院,海河路202号,邮政信箱,689,哈尔滨,150090 中国 ABSTRACT: Tests on twenty-one concrete filled steel tubes to investigate the influence of compaction methods on the strength of concrete filled steel tubular members are reported. 摘要:测试二十一钢管混凝土试验,研究了钢管对混凝土构件强度压实方法的影响报告。 Two parameters were investigated, including slenderness ratio and load eccentricity. 对两个参数进行研究,包括长细比和荷载偏心。 It was found that better compaction of concrete resulted in higher values of the ultimate strength of concrete filled steel

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专业英语大作业 一:英译汉 翻译范围TCP/IP Illustrated, V olume 1: The Protocols 5.1~5.5 15.1~15.2 第5章RARP:逆地址解析协议 5.1简介 5.2 RARP报文格式 5.3 RARP示例 5.4 RARP服务的设计 5.5小结 练习 5.1简介 一个拥有本地磁盘的系统通常是从磁盘文件读取配置文件中获取其IP地址。但一个没有磁盘的系统,如X终端或无盘工作站,需要一些其它方式去获得其IP地址。 每个系统在网络上都有一个唯一的硬件地址,由网络接口的制造商分配。 RARP的原则是无盘系统从接口卡上读取其独特的硬件地址,并发送RARP请求(网络上的广播帧)要求别人对无盘系统的IP地址(使用RARP回应)进行应答。 虽然这个概念很简单,执行往往比ARP更难,在本章后面会描述其原因。 RARP的正式规范是RFC 903。 5.2 RARP报文格式 RARP报文的格式几乎与ARP报文是相同的(图4.3)。唯一的区别是,RARP 的请求或应答帧类型为0×8035,并且在操作层RARP请求值为3、RARP应答值为4。 图4-3 ARP在网络上请求与应答报文的格式 与ARP一样,RARP服务器请求是广播和RARP应答通常是单播。 5.3 RARP示例 在我们的网络,我们可以强制sun主机从网络引导,而不是它的本地磁盘。 如果我们在主机bsdi上运行RARP服务器和tcpdump,我们得到如图5.1所示的输出。我们使用-e参数去标记tcpdump的打印硬件地址:

图5.1 RARP请求和应答。 该RARP请求是广播(1号线)的,第2行的RARP应答是单播的。第2行的输出,“at sun”,意味着RARP应答包含了主机sun(140.252.13.33)的IP地址。 在第3行,我们看到,一旦sun接收其IP地址,它会发出一个TFTP读请求(RRQ)的文件8CFCOD21.SUN4C。(TFTP是简单文件传输协议,我们在第15章进行详细描述)。在文件名中的8个十六进制数字是sun主机的IP地址140.252.13.33的十六进制表示形式。这是在RARP应答中返回的IP地址。该文件名的其余部分,后缀SUN4C表示系统正在引导的类型。 Tcpdump表示第3行是一个长度为65的IP数据报,而不是一个UDP数据报(实际上它确实是),因为我们运行tcpdump命令使用-e参数,看硬件级别的地址。另一点,在图5.1要注意的是在第2行的以太网帧的长度似乎比最小较短(我们所说的是在4.5节60字节)。原因是我们的系统,该系统上运行的tcpdump 发送该以太网帧(BSDI)。该应用程序rarpd,写42字节到BSD分组过滤器装置(14字节的以太网报头和28字节的RARP应答),这是什么的tcpdump收到的副本。但以太网设备驱动程序垫这个短帧的最小尺寸为传输(60 )。如果我们在另一个系统上已经运行的tcpdump ,长度会是60。 我们可以看到在这个例子,当这种无盘系统接收在RARP应答它的IP地址,它会发出一个TFTP请求来读取一个引导映像。在这一点上,我们不会进入其他详细介绍无盘系统是如何引导自己。(第16章介绍了使用RARP ,BOOTP和TFTP无盘X终端的引导顺序。) 图5.2表示出了如果有在网络上没有RARP服务器所得到的数据包。每个数据包的目的地址为以太网的广播地址。以太网地址跟随的是目标硬件地址,并按照发送端的硬件地址发送。

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the examination week. 6、The company that we would have one subject to another. 7、The American Congree the British Parliament. 8、We are trying to find some people who have a real sense of to the job. 9、the sandstorm, the Johnsons drove to the xilla to celebrate their 25th anniversary of marriage. 10、You are under no to pay for goods which you did not order. 11、Men still hold the vast majority of the least- or modt-dangerous jobs, such as loggers and miners. 12、He doesn’t expect to see changes overnight. 13、Students must have to good books.

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