《机械工程英语》注解.pdf

《机械工程英语》 Page 1 Unit 1. Engineering Materials Lesson 1 Classification of Engineering Materials Engineering materials is a term often used loosely to define most materials that go into products and systems. 工程材料一词常泛指用于构成产品和系统的大多数材料。 Engineering materials can also have a more specific meaning that refers to materials whose structure has been designed to develop specific properties for a given application. 工程材料也可特指为了某一具体用途而使其结构具有特殊特性的材料。 There are nearly a limitless variety of materials. -less :带否定意义的词尾，表示“无…的” ，“没有…的” meaning ¡ú meaningless:意义¡ú 无意义的 power ¡ú powerless:权力¡ú 无权力 land ¡ú landless:土地¡ú 无土地 Materials are the matter of the universe. These substances have… Matter （物质）＞substance （物质）＞material （材料） The method to understand them is to consider all materials as members of a big family. 理解它们的方法是将所有材料看作是一大类中的一员。 family:大类，家. Although overlaps exist in the grouping system, it is easier to understand materials when relationships are identified. 尽管分类系统存在重叠，但当识别清它们之间的关系时，理解材料还是比较容易的。 overlap ：重叠 grouping system ：分类系统，系统分类 identify ：认出，识别. recognize Four groups, metallics, polymers, ceramics, and composites comprise the main groups. 金属、聚合物、陶瓷和复合等四类材料构成了主要类别。 metallic ：a. 金属般的 （声音、色泽）. metallics：n.金属离子，金属物质. metal polymer ：n. 聚合物. poly-：[词头] 聚，多 eramic ：n . 陶瓷 composite ：n . 复合材料 comprise ：包含，由…组成 If sth. comprises particular things,… If a number of people or things comprise sth, .… be composed of be consisted of be made up of be made from 佛山科学技术学院 11 机电 （1）（2 ）用 刘峰璧 注 1 《机械工程英语》 be made of A fifth group of other materials is used for materials that do