由于低发动机罩和短行程发动机的进一步普及，半围延裙活塞和滑裙式活塞开始使用。

As lower hood lines and over square engines became popular, the semi-slipper and full-slipper pistons came into use.

youdao

使用滑裙活塞的原因是：短行程发动机需除去部分活塞裙部，从而为曲轴的平衡重让出空间。

One reason for the slipper piston is that, on the short-stroke, over square engine, the piston skirt had to be cut away to make room for the counterweights on the crankshaft.

youdao

使用滑裙活塞的原因是：短行程发动机需除去部分活塞裙部，从而为曲轴的平衡重让出空间。

One reason for the slipper piston is that, on the short-stroke, over square engine, the piston skirt had to be cut away to make room for the counterweights on the crankshaft.

youdao