工程机械专业英语 类型（Types） 4-Unit16-1-Types类型.pptx

工程机械运用技术专业国家级教学资源库English for Construction MachineryUnit 16 Cranes 起重机StructureTypes0102Part 1New WordsNew Words Expressions1）crane? ?[krein]? n.起重机2）lever?? [li?v?] ?n.杠杆3）pulley? [p?l?]? ?n.? 滑轮4）tower crane塔式起重机5）mechanical device机械装置6）skyscraper?? ?[ska?skrep?]? n.摩天大楼7）metropolitan?? [metr?p?l?t(?)n] ?n.大城市，大都汇8）mobile crane移动式起重机9）telescopic boom?伸缩臂10）crane truck 卡车起重机Part 2TextTextTypesThere are different types of cranes in use today that have evolved from their primary concept to move heavy material and objects with levers or pulleys. Typically, these machines are designated as either fixed or mobile. Following is a short list of some of the different types of cranes currently in use today. Text1）Tower Crane --This mechanical device is generally seen at almost every construction site and is manufactured with the most modern, state-of-the-art technology. It is especially useful, even required, in the building of tall skyscrapers in all metropolitan areas, as is shown in Fig.16-1.TextFig.16-1 Tower craneText2）Mobile crane – This is the basic form of a crane currently being used. It uses a telescopic boom mounted on a mobile platform to move enormous materials effectively and safely, As is shown in Fig.16-2.The mobile cranes can be moved to different locations, which makes them move convenient than tower cranes for such jobs, especially when mobility and speed must be in consideration. TextFig.16-2 Mobile crane Text3）Crane truck – As its name suggests, this is a long arm mounted on a truck. As is shown in Fig.16-3.It may have a separate engine for its own operation or share an engine with the truck itself. Regular trucks, or special models outfitted with caterpillar treads, could easily have large booms attached. Today they can be commonly seen on pretty much any construction site in the world. TextFig.16-3 Crane truckPart 3Grammar NotesGrammar Notes（语法注释） 1. This mechanical device is generally seen at almost every construction site and is manufactured w