The reasonableness and limitation of the conception of piston-cylinder assembly element introduced here is discussed and a complete formula for the effective area of piston gage is presented.

讨论了引入的元活塞概念的近似性和合理性，给出活塞有效面积的完整计算公式。

youdao

The final step came when steam was introduced into the cylinder to drive the piston backward as well as forward, thereby increasing the speed of the engine and cutting its fuel consumption.

最后一步是将蒸汽引入气缸，使得活塞前后推动，从而提高了发动机的速度，降低了燃料消耗。

youdao

The piston is reciprocating inside cylinder.

活塞在汽缸内部往复运动。

youdao

Its Variable Compression Engine can alter its compression ratio (the volume in a cylinder when the piston is up compared with the volume when it is down) from 14-1 to 8-1, depending on the circumstances.

ECONOMIST: Fuel economy