unit1 1.Not all polymers are built up from bonding together a single kind of repeating unit. At the other extreme ,protein molecules are polyamides in which n amino acide repeat units are bonded together. Although we might still call n the degree of polymerization in this case, it is less usefull,since an amino acid unit might be any one of some 20-odd molecules that are found in proteins. In this case the molecular weight itself,rather than the degree of the polymerization ,is generally used to describe the molecule. When the actual content of individual amino acids is known,it is their sequence that is of special interest to biochemists and molecular biologists.并不是所有的聚合物都是由一个重复单元链接在一起而形成的。在另一个极端的情形中，蛋白质分子是由n个氨基酸重复单元链接在一起形成的聚酰胺。尽管在这个例子中，我们也许仍然把n称为聚合度，但是没有意义，因为一个氨基酸单元也许是在蛋白质中找到的20多个分子中的任意一个。在这种情况下，一般是分子量本身而不是聚合度被用来描述这个分子。当知道了特定的氨基酸分子的实际含量，它们的序列正是生物化学家和分子生物学家特别感兴趣的地方。 1,题目：Another striking ...答案：.that quantity low saturation bottom much absorb 2. 乙烯分子带有一个双键，为一种烯烃，它可以通过连锁聚合大量地制造聚乙烯，目前，聚乙烯已经广泛应用于许多技术领域和人们的日常生活中，成为一种不可缺少的材料。 Ethylene molecule with a double bond, as a kind of olefins, it can make chain polymerization polyethylene, at present, polyethylene has been widely used in many fields of technology and People's Daily life, become a kind of indispensable materials. Unit3 1 The polymerization rate may be experimentally followed by measuring the changes in any of several properties of the system such as density,refractive index,viscosity, or light absorption. Density measurements are among the most accurate and sensitive of the techniques. The density increases by 20-25 percent on polymerization for many monomers. In actual practice the volume of the polymerizing system is measured by carrying out the reaction in a dilatometer. This is specially constructed vessel with a capillary tube which allows a highly accurate measurement of small volume changes. It is not uncommon to be able to detect a few hundredths of a percent polymerization by the dilatometer technique. 聚合速率在实验上可以通过测定体系的任一性质的变化而确定，如密度、折射率、黏度、或者吸光性能。密度的测量是这些技术中最准确最敏感的。对许多单体的聚合来说，密度增加了20%-25%。在实际操作中，聚合体系的体积是通过在膨胀计中进行反应测定的。它被专门设计构造了毛细导管，在里面可以对微小体积变化进行高精确度测量。通过膨胀计技术探测聚合过程中万分之几的变化是很常见的。 Unti4 2 合成聚合物在各个领域中起着与日俱增的重要作用，聚合物通常是由单体通过加成聚合与缩合聚合制成的。就世界上的消耗量而论，聚烯烃和乙烯基聚合物居领先地位，聚乙烯、聚丙烯等属聚烯烃，而聚氯乙烯、聚苯乙烯等则为乙烯基聚合物。聚合物可广泛地用作塑料、橡胶、纤维、涂料、粘合剂等The synthetic polymers play an increasingly important role on a range of domains, which are synthesized by monomers through addition polymerization or condensation polymerization. Polyolefin and vinyl polymer have taken the lead in terms of the world consumption. PE, PP, etc. belong to the polyolefin, while PS, PVC etc. belong to the vinyl polymer. Polymers can be widely applied in plastics, rubbers, fibers, coatings, glues and so on. Unit7 Ring-opening polymerizations proceed only by ionic mechanisms, the polymerization of cyclic ethers mainly by cationic mechanisms, and the polymerization of lactones and lactones by either a cationic or anionic mechanism. Important initiators for cyclic ethers and lactone polymerization are those derived from aluminum alkyl and zinc alkyl/water systems. It should be pointed out that substitution near the reactive group of the monomer is essential for the individual mechanism that operates effectively in specific cases; for
数学专业英语课后答案
2.1数学、方程与比例 词组翻译 1.数学分支branches of mathematics，算数arithmetics，几何学geometry，代数学algebra，三角学trigonometry，高等数学higher mathematics，初等数学elementary mathematics，高等代数higher algebra，数学分析mathematical analysis，函数论function theory，微分方程differential equation 2.命题proposition，公理axiom，公设postulate，定义definition，定理theorem，引理lemma，推论deduction 3.形form，数number，数字numeral，数值numerical value，图形figure，公式formula，符号notation(symbol)，记法/记号sign，图表chart 4.概念conception，相等equality，成立/真true，不成立/不真untrue，等式equation，恒等式identity，条件等式equation of condition，项/术语term，集set，函数function，常数constant，方程equation，线性方程linear equation，二次方程quadratic equation 5.运算operation，加法addition，减法subtraction，乘法multiplication，除法division，证明proof，推理deduction，逻辑推理logical deduction 6.测量土地to measure land，推导定理to deduce theorems，指定的运算indicated operation，获得结论to obtain the conclusions，占据中心地位to occupy the centric place 汉译英 （1）数学来源于人类的社会实践，包括工农业的劳动，商业、军事和科学技术研究等活动。 Mathematics comes from man’s social practice, for example, industrial and agricultural production, commercial activities, military operations and scientific and technological researches. （2）如果没有运用数学，任何一个科学技术分支都不可能正常地发展。 No modern scientific and technological branches could be regularly developed without the application of mathematics. （3）符号在数学中起着非常重要的作用，它常用于表示概念和命题。 Notations are a special and powerful tool of mathematics and are used to express conceptions and propositions very often. （4）17 世纪之前，人们局限于初等数学，即几何、三角和代数，那时只考虑常数。Before 17th century, man confined himself to the elementary mathematics, i. e. , geometry, trigonometry and algebra, in which only the constants were considered. （5）方程与算数的等式不同在于它含有可以参加运算的未知量。 Equation is different from arithmetic identity in that it contains unknown quantity which can join operations. （6）方程又称为条件等式，因为其中的未知量通常只允许取某些特定的值。Equipment is called an equation of condition in that it is true only for certain values of unknown quantities in it. （7）方程很有用，可以用它来解决许多实际应用问题。
Lesson2 Exercises 1. Put the following into Chinese. （1）Ohm’s law states that the voltage across a resistor is directly proportional to the current flowing through the resistor. The constant of proportionality is the resistance value of the resistor in ohms. 流过电路里电阻的电流，与加在电阻两端的电压成正比，与电阻的阻值成反比。这就是欧姆定律。 （2）Many materials, however, closely approximate an ideal linear resistor over a desired operating region. 不过，许多材料在规定的工作范围内非常接近理想线性电阻。 （3）It should be noted that an ideal voltage source (dependent or independent ) will produce any current required to ensure that the terminal voltage is as stated, whereas an ideal current source will produce the necessary voltage to ensure the stated current flow. 应该注意：一个理想电压源（独立或受控）可向电路提供任意电流以保证其端电压为规定值，而电流源可向电路提供任意电压以保证其规定电流。 （4）A different class of relationship occurs because of the restriction that some specific type of network element places on the variables. Still another class of relationship is one between several variable of the same type which occurs as the result of the network configuration, i. e., the manner in which the various element of the network are interconnected. 一种不同类型的关系是由于网络元件的某种特定类型的连接对变量的约束。另一类关系由于网络结构，即网络的不同元件互相连接的方式所产生的相同形式的一些变量间的关系。 （5）The thermal conductivity of metals is as much as several hundred times that of glass. 金属的导热率比玻璃高几百倍。 （6）Magnetic line of force will，whenever passible, travel through iron or other magnetic materials. 磁力线只要有可能就会通过铁或其它磁性材料。 （7）Actually, 0 o C is indeed the lower limit to temperatures capable of being attained. 事实上绝对零度确是所能达到的温度的最低限度。 2. Translate the following into English. （1）电路元件吸收或释放的功率为元件两端的电压与流过该元件电流的乘积。 The power absorbed or supplied by a circuit element is the product of the voltage across the element and the current through it. （2）理想独立电源是一个有源元件，它所提供的电压或电流不依赖于电路中其他变量。 An ideal independent source is an active element that provides a specified voltage or current that is completely independent of other circuit variables. （3）受控电源是一个有源元件，它所提供的电压或电流受电路中某部分电压或电流控制。 An ideal dependent (or controlled) source is an active element in which the source quantity is controlled by another voltage or current. （4）叠加定理为：线性电路中，任一电压或电流都是电路中各个独立电源单独作用时，在该处产生的电压或电流的叠加。 The superposition principle states that the voltage across (or current through) an element in a linear circuit is the algebraic sum of the voltages across (or current through) that element due to each independent source acting alone. （5）计算机可分为模拟计算机和数字计算机两种。Computers may be classfied as analog and digital．（6）新型晶体管的开关时间缩短了三分之二。The switching time of the new-type transistor is shortened three times． （7）超导体在电气应用上的重要性不能被估计过高。The importance of superconductor in the uses of electricity cannot be overestimated.
高分子材料工程专业英语第二版(曹同玉) 课后单词
专业英语 accordion 手风琴 activation 活化（作用） addition polymer 加成聚合物，加聚物 aggravate 加重，恶化 agitation 搅拌 agrochemical 农药，化肥 Alfin catalyst 醇（碱金属）烯催化剂align 排列成行 aliphatic 脂肪（族）的 alkali metal 碱金属 allyl 烯丙基 aluminum alkyl 烷基铝 amidation 酰胺化（作用） amino 氨基，氨基的amorphous 无定型的，非晶体的anionic 阴（负）离子的antioxidant 抗氧剂 antistatic agent 抗静电剂 aromatic 芳香（族）的arrangement （空间）排布，排列atactic 无规立构的 attraction 引力，吸引 backbone 主链，骨干 behavior 性能，行为 biological 生物（学）的 biomedical 生物医学的 bond dissociation energy 键断裂能boundary 界限，范围 brittle 脆的，易碎的 butadiene 丁二烯 butyllithium 丁基锂 calendering 压延成型 calendering 压延 carboxyl 羧基 carrier 载体 catalyst 催化剂，触媒categorization 分类（法） category 种类，类型 cation 正[阳]离子 cationic 阳（正）离子的centrifuge 离心 chain reaction 连锁反应 chain termination 链终止 char 炭 characterize 表征成为…的特征 chilled water 冷冻水 chlorine 氯（气） coating 涂覆 cocatalyst 助催化剂 coil 线团 coiling 线团状的 colligative 依数性 colloid 胶体 commence 开始，着手 common salt 食盐 complex 络合物 compliance 柔量 condensation polymer 缩合聚合物，缩聚物 conductive material 导电材料conformation 构象 consistency 稠度，粘稠度contaminant 污物 contour 外形，轮廓 controlled release 控制释放controversy 争论，争议 conversion 转化率 conversion 转化 copolymer 共聚物copolymerization 共聚（合）corrosion inhibitor 缓释剂countercurrent 逆流 crosslinking 交联 crystal 基体，结晶 crystalline 晶体，晶态，结晶的，晶态的 crystalline 结晶的 crystallinity 结晶性，结晶度crystallite 微晶 decomposition 分解 defect 缺陷 deformability 变形性，变形能力deformation 形变 deformation 变形 degree of polymerization 聚合度dehydrogenate 使脱氢 density 密度 depolymerization 解聚deposit 堆积物，沉积depropagation 降解 dewater 脱水 diacid 二（元）酸 diamine 二（元）胺 dibasic 二元的 dieforming 口模成型 diffraction 衍射 diffuse 扩散 dimension 尺寸 dimensional stability 尺寸稳定性dimer 二聚物（体） diol 二（元）醇diolefin 二烯烃 disintegrate 分解，分散，分离 dislocation 错位，位错 dispersant 分散剂 dissociate 离解 dissolution 溶解 dissolve 使…溶解 distort 使…变形，扭曲 double bond 双键 dough （生）面团，揉好的面 drug 药品，药物 elastic modulus 弹性模量 elastomer 弹性体 eliminate 消除，打开，除去 elongation 伸长率，延伸率 entanglement 缠结，纠缠 entropy 熵 equilibrium 平衡 esterification 酯化（作用） evacuate 撤出 extrusion 注射成型 extrusion 挤出 fiber 纤维 flame retardant 阻燃剂 flexible 柔软的 flocculating agent 絮凝剂 folded-chain lamella theory 折叠链片晶 理论 formulation 配方 fractionation 分级 fragment 碎屑，碎片 fringed-micelle theory 缨状微束理 论 functional group 官能团 functional polymer 功能聚合物 functionalized polymer 功能聚合物 gel 凝胶 glass transition temperature 玻璃化温度 glassy 玻璃（态）的 glassy 玻璃态的 glassy state 玻璃态 globule 小球，液滴，颗粒 growing chain 生长链，活性链 gyration 旋转，回旋 hardness 硬度 heat transfer 热传递 heterogeneous 不均匀的，非均匀的 hydocy acid 羧基酸 hydrogen 氢（气） hydrogen bonding 氢键 hydrostatic 流体静力学 hydroxyl 烃基 hypothetical 假定的，理想的，有前提的 ideal 理想的，概念的 imagine 想象，推测 imbed 嵌入，埋入，包埋 imperfect 不完全的 improve 增进，改善 impurity 杂质 indispensable 不了或缺的 infrared spectroscopy 红外光谱法 ingredient 成分 initiation （链）引发 initiator 引发剂 inorganic polymer 无机聚合物 interaction 相互作用 interchain 链间的 interlink 把…相互连接起来连接 intermittent 间歇式的 intermolecular (作用于)分子间的 intrinsic 固有的 ion 离子 ion exchange resin 离子交换树 脂 ionic 离子的 ionic polymerization 离子型聚合 irradiation 照射，辐射 irregularity 不规则性，不均匀的 isobutylene 异丁烯 isocyanate 异氰酸酯 isopropylate 异丙醇金属，异丙氧化金属 isotactic 等规立构的 isotropic 各项同性的 kinetic chain length 动力学链长 kinetics 动力学 latent 潜在的 light scattering 光散射 line 衬里，贴面 liquid crystal 液晶 macromelecule 大分子，高分子 matrix 基体，母体，基质，矩阵 mean-aquare end-to-end distance 均方末端距 mechanical property 力学性能， 机械性能 mechanism 机理 medium 介质中等的，中间的 minimise 最小化 minimum 最小值，最小的 mo(u)lding 模型 mobility 流动性 mobilize 运动，流动 model 模型 modify 改性 molecular weight 分子量 molecular weight distribution 分子量分布 molten 熔化的 monofunctional 单官能度的 monomer 单体 morphology 形态（学） moulding 模塑成型 neutral 中性的 nonelastic 非弹性的 nuclear magnetic resonance 核磁共振 nuclear track detector 核径迹探测 器 number average molecular weight 数均分子量 occluded 夹杂（带）的 olefinic 烯烃的 optimum 最佳的，最佳值[点，状态] orient 定向，取向 orientation 定向 oxonium 氧鎓羊 packing 堆砌 parameter 参数 parison 型柸 pattern 花纹，图样式样 peculiarity 特性 pendant group 侧基 performance 性能，特征 permeability 渗透性 pharmaceutical 药品，药物，药物的，医药 的 phenyl sodium 苯基钠 phenyllithium 苯基锂 phosgene 光气，碳酰氯 photosensitizer 光敏剂 plastics 塑料 platelet 片晶 polyamide 聚酰胺 polybutene 聚丁烯 polycondensation 缩（合）聚 （合） polydisperse 多分散的 polydispersity 多分散性 polyesterification 聚酯化（作 用） polyethylene 聚乙烯 polyfunctional 多官能度的 polymer 聚合物【体】，高聚物 polymeric 聚合（物）的 polypropylene 聚苯烯 polystyrene 聚苯乙烯 polyvinyl alcohol 聚乙烯醇 polyvinylchloride 聚氯乙烯 porosity 多孔性，孔隙率 positive 正的，阳（性）的 powdery 粉状的 processing 加工，成型 purity 纯度 pyrolysis 热解 radical 自由基 radical polymerization 自由基聚合 radius 半径 random coil 无规线团 random decomposition 无规降解 reactent 反应物，试剂 reactive 反应性的，活性的 reactivity 反应性，活性 reactivity ratio 竞聚率 real 真是的 release 解除，松开 repeating unit 重复单元 retract 收缩 rubber 橡胶 rubbery 橡胶态的 rupture 断裂 saturation 饱和 scalp 筛子，筛分 seal 密封 secondary shaping operation 二次成型 sedimentation 沉降（法） segment 链段 segment 链段 semicrystalline 半晶 settle 沉淀，澄清 shaping 成型 side reaction 副作用 simultaneously 同时，同步 single bond 单键 slastic parameter 弹性指数 slurry 淤浆 solar energy 太阳能 solubility 溶解度 solvent 溶剂 spacer group 隔离基团 sprinkle 喷洒 squeeze 挤压 srereoregularity 立构规整性【度】 stability 稳定性 stabilizer 稳定剂 statistical 统计的 step-growth polymerization 逐步聚合 stereoregular 有规立构的，立构规整性的 stoichiometric 当量的，化学计算量的 strength 强度 stretch 拉直，拉长 stripping tower 脱单塔 subdivide 细分区分 substitution 取代，代替 surfactant 表面活性剂 swell 溶胀 swollen 溶胀的 synthesis 合成 synthesize 合成 synthetic 合成的 tacky （表面）发粘的 ,粘连性 tanker 油轮，槽车 tensile strength 抗张强度 terminate （链）终止 tertiary 三元的，叔（特）的 tetrahydrofuran 四氢呋喃 texture 结构，组织 thermoforming 热成型 thermondynamically 热力学地 thermoplastic 热塑性的 thermoset 热固性的 three-dimensionally ordered 三维有序的 titanium tetrachloride 四氯化钛 titanium trichloride 三氯化铁 torsion 转矩 transfer （链）转移，（热）传递 triethyloxonium-borofluoride 三乙基硼氟 酸羊 trimer 三聚物（体） triphenylenthyl potassium 三苯甲基钾 ultracentrifugation 超速离心 （分离） ultrasonic 超声波 uncross-linked 非交联的 uniaxial 单轴的 unsaturated 不饱和的 unzippering 开链 urethane 氨基甲酸酯 variation 变化，改变 vinyl 乙烯基（的） vinyl chloride 氯乙烯 vinyl ether 乙烯基醚 viscoelastic 黏弹性的 viscoelastic state 黏弹态 viscofluid state 黏流态 viscosity 黏度 viscosity average molecular weight 黏均分子量 viscous 粘稠的 vulcanization 硫化 weight average molecular weight 重均分子量 X-ray x射线 x光 yield 产率 Young's modulus 杨氏模量
2.1 数学、方程与比例 （1）数学来源于人类的社会实践，包括工农业的劳动，商业、军事和科学技术研究等活动。 Mathematics comes from man’s social practice, for example, industrial and agricultural production, commercial activities, military operations and scientific and technological researches. （2）如果没有运用数学，任何一个科学技术分支都不可能正常地发展。 No modern scientific and technological branches could be regularly developed without the application of mathematics. （3）符号在数学中起着非常重要的作用，它常用于表示概念和命题。Notations are a special and powerful tool of mathematics and are used to express conceptions and propositions very often. （4）17 世纪之前，人们局限于初等数学，即几何、三角和代数，那时只考虑常数。 Before 17th century, man confined himself to the elementary mathematics, i. e. , geometry, trigonometry and algebra, in which only the constants were considered. （5）方程与算数的等式不同在于它含有可以参加运算的未知量。 Equation is different from arithmetic identity in that it contains unknown quantity which can join operations. （6）方程又称为条件等式，因为其中的未知量通常只允许取某些特定的值。Equipment is called an equation of condition in that it is true only for certain values of unknown quantities in it. （7）方程很有用，可以用它来解决许多实际应用问题。 Equations are of very great use. We can use equations in many mathematical problems. （8）解方程时要进行一系列移项和同解变形，最后求出它的根，即未知量的值。To solve the equation means to move and change the terms about without making the equation untrue, until the root of the equation is obtained, which is the value of unknown term. 2.2 几何与三角 （1）许多专家都认为数学是学习其他科学技术的必备基础和先决条件。 Many experts recognize that mathematics is the necessary foundation and prerequisite of studying other science technology. （2）西方国家的专家认为几何起源于巴比伦和埃及人的土地测量技术，其实中国古代的数学家对几何做了许多出色的研究。 The western experts think that geometry had its origin in the measurements by the Babylonians and Egyptians of their lands. Infect, the ancient Chinese mathematicians made much remarkable study for geometry. （3）几何的学习使学生在思考问题时更周密和审慎，他们将不会盲目接受任何结论。 In studying geometry, the student is taught to think clearly and critically and he is led away from the practice of blind acceptance of any conclusions. （4）数学培养学生的分析问题的能力，使他们能应用毅力、创造性和逻辑推理来解决问题。
【专业英语课后题答案】徐鹿专业英语答案 Unit 1 The Fundamentals of Computers 1.1 The Varieties of Computers ? III. Translating. – 1. Original : Primary storage, or memory, is the internal computer circuitry that temporarily holds data waiting to be processed. Secondary storage, simply called storage, refers to the devices and media that store data or information permanently. – Translation : 一级存储，或称内存，是临时保存等待被处理数据的计算机内 部电路。而二级存储，简称存储器，是指那些永久性存储数据或信息的设备 和介质。 – 2. Original : A biological nanocomputer, which would be made of DNA and could fit into a single human cell, would use DNA as its software and enzymes as its hardware; its molecular-sized circuits would be viewable only through a microscope. – Translation : 由DNA 制成并能放置在一个单独的人体细胞中的生物学纳米 计算机会利用DNA 作为它的软件，酶作为它的硬件；其具有分子大小尺寸 的电路将只有通过显微镜才能够看见。 1.2 The History of Computers ? III. Translating. – 1. Original : This introduction pought about the first real signs of competition within computing history, which helped to spur faster and better development of computers. – Translation : 这一引入带来了计算历史中可谓第一个真正的竞争标志，有助 于刺激计算机更快 –更好的发展。 – 2. Original : While expensive, these machines started the trend for computers within common households. – Translation : 虽然昂贵，但是这些机器开启了计算机在普通家庭中使用的趋 势。 Unit 2 Computer Hardware 1.1 Computer Motherboard ? III. Translating. – 1. Original : A 2003 study found that some spurious computer crashes and general reliability issues, ranging from screen image distortions to I/O read/write errors, can be attributed not to software or peripheral hardware but to aging capacitors on PC motherboards. – Translation : 2003年的一个研究发现，一些伪劣的计算机损毁和常规可靠性 的问题，从屏幕图像失真到输入/输出读写错误，并不是由于软件或外围硬 件引起的，而是由于PC 机主板上老化的电容器造成的。 – 2. Original : At power-up the central processor would load its program counter with the address of the boot ROM and start executing ROM instructions displaying system information on the screen and running memory checks. – Translation :启动之后，中央处理器将加载记录着引导ROM 地址的程序计数
加工processing 反应性加工reactive processing 等离子体加工plasma processing 加工性processability 熔体流动指数melt [flow] index 门尼粘度Mooney index 塑化plasticizing 增塑作用plasticization 内增塑作用internal plasticization 外增塑作用external plasticization 增塑溶胶plastisol 增强reinforcing 增容作用compatibilization 相容性compatibility 相溶性intermiscibility 生物相容性biocompatibility 血液相容性blood compatibility 组织相容性tissue compatibility 混炼milling，mixing 素炼mastication 塑炼plastication 过炼dead milled 橡胶配合rubber compounding 共混blend 捏和kneading 冷轧cold rolling 压延性calenderability 压延calendering 埋置embedding 压片preforming 模塑molding 模压成型compression molding 压缩成型compression forming 冲压模塑impact moulding，shock moulding 叠模压塑stack moulding 复合成型composite molding 注射成型injection molding 注塑压缩成型injection compression molding 射流注塑jet molding 无流道冷料注塑runnerless injection molding 共注塑coinjection molding 气辅注塑gas aided injection molding 注塑焊接injection welding 传递成型transfer molding