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1、ChineseEnglish受热固体在其冷却过程中的收缩作用，被利用在铆接上。Contraction during cooling of heated solids is made use of in riveting.曾试图再生催化剂，其方法是在300的温度下以8cm3/s的流速对催化剂通氧4小时。Attempts were made to regenerate the catalyst by passing oxygen at the rate of 8cc/sec. for 4 hours at 300.电能可以储存在由一绝缘介质隔开的两块金属极板内。这类装置称之为电容器，其储存电能的能
2、力叫做电容。电容的测量单位是法拉。Electrical energy can be stored in two metal plates separated by an insulating medium. Such a device is called a capacitor, or a condenser, and its ability to store electrical energy (is called) capacitance. It is measured in farads.所有信号分成许多组，而若干组信号又组合成一个复合信号。The signals are grouped
3、 into packages and a number of packages (are) combined into a composite signal.顶风时速度为每小时20英里，顺风时速度为每小时80英里。The speed against the wind is 20 miles per hour and with the wind 80 miles.第一个计划将需要至少108周，而第二个计划将只需72周。The first program would require a minimum of 108 weeks, the second only 72 weeks.在本书中T将只表示
4、温度，除非另有说明。T will represent temperature alone in this book unless otherwise stated.自然界中发现的元素大部分是同位素的混合物。Most elements as found in nature are mixtures of isotopes.在河口湾出现的混合物越强烈，次表层向陆地方向的流量越来越大。The more mixing that occurs in the estuary, the greater is the landward flow in the substance layer.由于空气是由几种不
5、同的纯净物组成，它是一种混合物。Composed of several different substances, air is mixture.拉力性能的改善确实确实取决于热处理过程。The improvement of tensile properties depends indeed on the procedures of heat treatment, as in Fig. 5.围绕中心向内吹的风与等压线构成2040的夹角。The wind directed inward around the center makes angles of 20to 40with the isobar
6、s.标量是只计大小的量。A scalar quantity is one defined by its magnitude alone.这样给的数字不能提供什么有用的情报。Thus presented, the figures give no useful information.这些小装置设有电动压缩泵，因而有“电”冰箱之称。These small units have an electrically compressive pump, hence they have the name “electric” refrigerator.如果在一张世界地图上把具有相同温度异常的地点以等异常线画出
7、来，结果就可得到一张气温等异常图。If lines, called isanomals, are drawn on a world map, joining places of equal thermal anomaly, an isanomalous map is the result.如果把这些物质放在一起并在常压下加热到25，则结果会产生一种新的化合物。If put together and heated to 25 at constant pressure, these substances will result in a new compound.电子学是一切电信系统的基础。Ele
8、ctronics is the basis of all telecommunication systems.很多年以前，科学家们就认识到疟疾是由病菌引起的，该病菌是由某种蚊子携带的。Many years ago, scientists were convinced that malaria is caused by a germ carried by a certain species of mosquito.食盐溶于水。Common salt dissolves in water.图2示出了炼油厂的总布置图。Figure 2 shows the principal layout of an
9、 oil refinery.锡可以耐受空气或水的腐蚀的。Tin is resistant to corrosion by air or water.反应已经终止。The reaction has already come to an end.现代科学的最显著特点之一，就是全世界科学家及科学机构之间不断发展更为密切的合作的趋势。One of the most striking characteristics of modern science has been the increasing trend towards closer cooperation between scientists a
10、nd scientific institutions all over the world.帕斯卡把一根水银管带到山顶上，当即发现水银柱随高度的增加而降低。Pascal carried a mercury tube to the top of a mountain and observed that the column fell steadily as the height increased.培养方式A显示有大量的干重，而这种培养方式所使用的铵盐量最大。这可能意味着添加的氨量是这些实验的决定性条件。The highest dry weight is shown for culture A,
11、 which received the greatest amount of the ammonium salt. This may mean that the amount of nitrogen added was the determining condition for the experiments.在这些试验的其他条件不变的情况下，当土壤里添加了硫酸铵时，稻子生长得较好。Rice grew better, under the other conditions of these tests, when ammonium sulphate was added to the soil.直
12、到1949年急流才作为一种气象实体现象为人们充分认识到。The jet stream was not fully recognized as a meteorological entity until 1949.据报道，科学工作者曾针对储存太阳能的问题进行过多年的研究。It was reported that scientists had worked at the problem of storing the suns heat for many years.资料刚在图上填完，分析就开始了。The data had no sooner been charted than analysis w
13、as started.这些科学家和技术人员下月将进行一项非常重要的测试。The scientists and technicians will carry out a very important test next month.受压缩的气体的温度将会升高。A gas under compression will become hotter.在进行激光淬火时，工件表面先用能增大其吸收能力的物质（例如石墨或磷酸锰）涂敷，再借助高功率密度的光束的冲击而加热到奥氏体化温度；当移去光束时，就会因向工件体内的热传递而发生快递的冷却，快得足以促发马氏体转变，而无需施加外部冷却。In laser harde
14、ning, the surface of the workplace, coated with a substance (e.g. graphite or manganese phosphate) which increases its absorptivity, is heated to austenitizing temperature by impingement of the beam at high power densities; on removal of the beam, cooling, sufficiently fast to promote martensitic tr
15、ansformation, takes place by heat transfer to the body of the component, no external cooling being applied.根据这种应用，多小型机系统中数据库的处理可以分配给专用的、通常可被系统内所有小型计算机访问的后端数据库管理处理器，或通过把原始数据转移到现场数据库的办法而把数据库分配到整个系统中去，并借助于最大限度减少通信设备负载来完成计算更新。Depending on the application, database handling in a multimini system may be a
16、ssigned to a special-purpose back-end data base management processor that usually can be accessed by all the minis in the system, or the data bases may be distributed throughout the system in such a way that transfer of raw data is to site of the database and computing updates are performed in a manner that minimizes the load on the communications fa
