【正文】 來(lái)回流動(dòng)。 The news concerns your brother. 這消息與你兄弟有關(guān)。 II. Text Explanation ? warp [w?:p] ? n. 彎曲 , 歪曲 vt. 弄歪 , 使翹曲 , 變歪 ? added to ? incresed（本身）增加 ? added to(別人，別的東西 )增加 ? 譯文： 為了使鋁制材料強(qiáng)度更高，盡可能的減少?gòu)澢冃?，可加入一定的金屬材料或者在缸體內(nèi)鑲鋼缸套。 III. Exercises ?II. Translate the following sentences into English. ?1．氣缸墊安裝時(shí)，要注意它的方向性。 ?The other house got old and shabby, and that cut into the value. ?周?chē)姆孔佣计婆f不堪 , 這使得他房子的價(jià)值 降低 了。 ? the radiator n. 散熱器 ? misplace [mis?pleis] vt. 放錯(cuò)地方 II. Text Explanation ? Translate the following expressions into Chinese. ? piston ring ? piston pin ? connecting rod ? expansion force ? cylinder wall ? in the bottom of the grooves ? pass the reciprocating power of the piston ? connecting rod small end ? connecting rod cap ? connecting rod bearing half shells III. Exercises ?活塞環(huán) ?活塞銷(xiāo) ?連桿 ?膨脹力 ?汽缸壁 ?在槽的底部 ?傳遞活塞的往復(fù)動(dòng)力 ?連桿小頭 ?連桿蓋 ?連桿軸瓦 pression rings oil rings piston pin piston connecting rod connecting rod bolt crank bearing half shell connecting rod cap III. Exercises ?Piston rings are of two basic types, that is, pression rings and oilcontrol rings. They perform important functions as follows: the upper pression rings must maintain an effective seal against bustion gases leaking past the pistons into the crankcase . The lower oilcontrol rings serve to control and effectively distribute the lubricating oil thrown on to the cylinder walls, consistent with maintaining good lubrication and an acceptable oil consumption . These rings also provide a means by which surplus heat is transmitted from the piston to the cylinder wall and then to the cooling jacket. III. Exercises ?I. Translate the following sentences into Chinese. ?1． The piston converts the potential energy of the fuel into kiic energy that turns the crankshaft. ?活塞將燃料燃燒的能量轉(zhuǎn)換成驅(qū)動(dòng)曲軸旋轉(zhuǎn)的動(dòng)能。底下的一道防止機(jī)油飛濺到缸筒從而竄入燃燒室的環(huán)叫做油環(huán)。惰性 Inertia carried the train past the station. 慣性 使火車(chē)駛過(guò)了車(chē)站。 ?She sings as well as playing the piano. ?她不但會(huì)彈鋼琴，而且會(huì)唱歌。它安裝在曲軸的后面。 III. Exercises ?II. Translate the following sentences into English. ?1．曲軸的作用是把往復(fù)動(dòng)力變?yōu)樾D(zhuǎn)動(dòng)力。 ?They are ill provided with food. ?他們的食品不足。?:?i?] n. ?1. 慣性 。 ? A piston pin fits into a round hole in the piston. The piston pin joins the piston to the connecting rod. The thick part of the piston that holds the piston pin is the pin boss. ?2．活塞銷(xiāo)貫穿活塞，把連桿小頭與活塞連在一起，并將連桿保持在活塞中心的適當(dāng)位置處。 II. Text Explanation ? avoid vt. 避免 [(n./+ving)] ? They all avoided mentioning that name. 他們都 避免 提及那名字。t cut into the story. ? 不要 打斷 故事。 ?2． The cylinder gasket?s function is to seal the area between them and prevent leakage of gas, oil and water. ?氣缸墊的作用就是密封缸蓋與缸體之間的區(qū)域，避免漏氣、漏油和漏水。 II. Text Explanation ?It should be paid attention to the direction when fixing. ?to是介詞 ,所以后面接名詞以及動(dòng)名詞 . ?pay attention to sth. / doing sth. ?Please pay attention to taking care of your baby. ?請(qǐng)注意照顧好你的小孩 . ?譯文： 應(yīng)該注意裝配時(shí)的方向。 II. Text Explanation ?Concern vt. ?1. (不用被動(dòng)語(yǔ)態(tài) )關(guān)于 ?2. 涉及 ,關(guān)系到 。 III. Exercises ?1．發(fā)動(dòng)機(jī)主要有兩大機(jī)構(gòu)五大系統(tǒng)組成。 III. Exercises II. Translate the following sentences into English. ?氣門(mén)機(jī)構(gòu)的作用是及時(shí)地吸入新鮮的混合氣和排出廢氣 ?The valve gear provides timely admission of the fresh charge into the cylinders and exhaust of spent gases from them. III. Exercises Specialized English for Automobile Specialized English for Automobile Unit 21 Main Components of Engine Contents Ⅰ ． Prequestions II. Text Explanation III. Exercises I. Prequestions The heart of automobile ?What impression of the engine? plicated power I. Prequestions ?What are there types of the engine? ?electric motors, steam engines, and internal bustion engines ?What?s the internal bustion engine? ?burns fuel within the cylinders and converts the expanding force of the bustion into rotary force used to propel the vehicle. I. Prequestions Singlecylinder engine cylinder piston Piston pin Connecting rod crankshaft Oil pipe Intake valve Exhaust valve Timing gear Oil pump ?what is the power source of automobile and how to produce? piston piston pin connecting rod crankshaft Engine Power is produced by the linear motion of a piston in a cylinder. The connecting rod transmits the upanddown motion of the piston to the crankshaft, which changes it into rotary motion. I. Prequestions ?The engine prises two mechanism and five systems, what are they ? ?crankshaft and connecting rod mechanism, ?valve gear, ?cooling system, ?lubricating system, ?fuel system, ?starting system, ?ignition system I. Prequestions connecting rod flywheel crankshaft piston intake valve exhaust valve push rod tappet timing gears ■ Valve gear ■ Connecting rod Engine cooling system Engine lubricating system Fuel supply system Valve gear ?What?s the function of the crankshaft and connecting rod mechanism? ? Its function is to convert heat energy into mechanical energy used to drive the vehicles. I. Prequestions ?The internal bustion engine, as its name indicates, burns fuel within the cylinders and converts the expanding force of the bustion into rotary force used to propel the vehicle. ?譯文： 內(nèi)燃機(jī)， 顧名思義 ，就是燃料在氣缸內(nèi)部燃燒，并且把燃燒時(shí)的膨脹力轉(zhuǎn)化為驅(qū)動(dòng)車(chē)輛的旋轉(zhuǎn)力。 4propeller shaft。 ?convert water into ice. ?將水變成冰 ?converting feet into meters. ?將英尺換算成公尺 II. Text Explanation ? Brake system is a balanced set of mechanical and hydraulic devices used to retard the motion of the vehicle by means of friction. ? Hydraulic [hai?dr??lik] adj. 液壓的 , 水力的