交通运输专业英语课件_(1)(精品·公开课件).ppt

交通运输专业英语 Lesson 2 Internal Combustion Engine (Part Ⅰ) 基本要求：  通过本章的学习，使学生掌握内燃机的结构和工作原理相关专业英语词汇及表述方法，使学生能流利阅读准确翻译相关语句，并掌握常用英汉互译技巧。 重点难点： 流利阅读相关文献，准确翻译短句。 New Words Expressions: Self-contained 独立的 compress vt.压缩 piston n.活塞 crankshaft n.曲轴 crank n.曲柄 carburetor n.化油器 connecting rod 连杆 rod n.杆，棒 rocker n.摇臂 rock n.岩石，摇动；v.摇动，摆动 rocker arm 摇臂 pushrod n.推杆 distributor n.分配器，配电器 distribute v. camshaft n.凸轮轴 cam n. valve lifter 阀门挺杆 valve n.阀 oil filter 机油滤清器 filter n.;v. oil pump 机油泵 top dead centre 上止点 bottom dead centre 下止点 manifold n.[化]歧管，支管，导管 n.复印本，多种；a.多种的；v.复写，增多 eg. manifold effect inlet n.进气，入口 inlet valve n.进气阀 induction n.引入，诱导，感应，进气 exhaust v.;n.排出;排气(口),废气 exhaust valve 排气阀 stagger v.交错 bore n.孔 v. bore a hole venturi n .缩喉管 jet n.喷嘴 throttle n.节流阀 depression n.降低，下降，衰减 pivot n.枢轴，支点 vi,在枢轴上传动；vt.装枢轴于 tilt v.倾斜，翻转 principle：原则，原理；准则，道义 principal：主要的，首要的 vacuum：真空，真空度 revolution：革命，循环，周期 sectional：截面的，剖面的；部分的，局部的 1 Principle of Operation The engine is a self-contained power unit which converts the heat energy of fuel into mechanical energy for moving the vehicle. 发动机是一个独立的动力装置，它把燃料燃烧产生的热能转变成机械能，从而推动车辆运行。 Because fuel is burned within, the engine is known as an internal combustion (IC) engine. In the IC engine, an air-fuel mixture is introduced into a closed cylinder where it is compressed and then ignited. introduce：介绍，引荐；引进；输入，传入 由于燃料在发动机气缸