例如，将变速器装配到离合器壳上时，必须使变速器输入轴的中心线与发动机曲轴的中心线对准。

For example, using the gearbox fitted to the shell, the need for gearbox input shaft axis lines at the engine crank axis lines.

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汽车离合器位于发动机和变速箱之间的飞轮壳内，用螺钉将离合器总成固定在飞轮的后平面上，离合器的输出轴就是变速箱的输入轴。

Automobile clutch in the engine and gearbox between the flywheel shell, with screw will be fixed in the clutch assembly after the plane of the flywheel, clutch gearbox output shaft is the input shaft.

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