Drive Line
单词：
1-clutch; 2-transmission; 3-universal joint; 4-final drive; 5-differential; 6-drive shaft
The typical drive line comprises clutch, transmission, drive shaft, final drive, differential and the driving wheels.
典型传动系统一般包括离合器、变速器、传动轴、主减速器、差速器和驱动轮等六部分。
When you lift the clutch pedal, springs force the pressure plate and clutch plate against the flywheel.
当抬起踏板时，压缩弹簧将压盘和从动盘推向飞轮。
A manual transmission requires a clutch to apply and remove the engine torque to the transmission input shaft.
手动变速器需要用离合器来把发动机转矩施加给变速器输入轴或从变速器输入轴撤消。
When the car is on straight road, the ring gear, differential case, differential pinion gears, and two differential side gears all turn as a unit without any relative motion.
汽车在直线行驶时，齿圈、差速器壳、差速器行星齿轮和两个差速器半轴齿轮作为一个整体运转，而无任何相对运动 。
The drive shafts are usually hollow in order to weigh less, but of a large diameter so that they are strong .
传动轴通常是空心的以减轻重量，但直径比较大使它有足够的强度 。
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