piston steam engine

基本解釋

The core of a steam engine is a cylinder that is sealed at one end and has a moving piston at the other.
蒸汽機的核心是汽缸。它一端密封，另一端有個可以移動的活塞。
The cylinder of a steam engine is closed by plates at Both ends, with provision for the piston rod, which is rigidly attached to the piston, to pass through one of the end cover plates.
蒸汽機的汽缸兩端都用蓋封住，使得與活塞剛性連接的活塞桿穿過蓋的一端。
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.
最后步驟啟動，這時蒸汽被導入汽缸從而驅使活塞像向前一樣的向后，從而提高引擎的速度切斷燃料的耗費。