EST科技英语ES科技英语.doc

1 The classical Greek civilization knew of seven metals: gold, silver, copper, iron, tin, lead and mercury. 在古希腊文明社会里，人们已经知道使用金银铜铁锡铅和水银七种金属。 2 Now we have a better understanding of Einstein’s special theory of relativity after attending a series of lectures on the topic. 参加了一系列相关讲座后，我们加深了对爱因斯坦狭义相对论的理解. 3 The holographic image (全息照片）must be viewed by looking directly through the film. Consequently，the size of the film limits the size of the audience that may view it at one time. 全息图像一定要直接透过底片才能观看。因此，底片的尺寸使同时观看的人数受到限制。 4 Sodium hydroxide （氢氧化钠）is a strong base. 氢氧化钠是一种强碱。 5 The half-lives of certain radioactive substances are very long. 某些放射性物质的半衰期很长。 6. Friction is usually the main cause of wear. 摩擦是造成磨损的主要原因。 7.A body will expand when heated and contract when cooled. 物体热胀冷缩。 8. They got a heavy fine due to the breach of the contract. 由于违反了合同，他们受到了巨额罚款。 9. The image forms on the plate and is then developed. 图像形成于底片，接着冲洗出来。 10.The next step would be to try to develop means for sending television pictures. 下一步就是要寻求发送电视图片的方法了。 1 Matters consist of molecules and molecules of atoms. 物质是由分子组成的，而分子是由原子组成的。 2 Accurate in operation and high in speed, computers can save man a lot of time and labor. 由于计算机运算准确，速度快，所以能节省人类大量的时间和精力。 3 Solids in greatly different degrees resist being changed in shape. 各种固体抗形变的程度极不相同。 4 Machinery has made the products of manufactories very much cheaper than formerly. 因为使用机器的缘故，工厂的产品比以前价格便宜多了。 5 Changing the number of turns of coils may set up or set down the voltage. 改变线圈匝数可以升压或降压。 6. In case the air moves slowly, there will be a breeze. 空气慢慢流动，就会产生微风。 7. Physics is the study of heat, sound, magnetism, electricity, light, the properties of matter and what it is composed of. 物理学研究热，声，磁，电，光，物质的性质及其成分。 8. Alternating current has a lot of advantages. 交流电优点很多。 9.Throughout the world come into use the same signs and symbols of mathematics. 全世界都采用相同的数学符号。 10. Water evaporates more rapidly when the temperature is high than when it is low. 温度高，