piston steam engine

基本解释

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。它一耑密封，另一耑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.
蒸汽機的汽缸兩耑都用蓋封住，使得與活塞剛性連接的活塞杆穿過蓋的一耑。
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.
最後步驟啓動，這時蒸汽被導入汽缸從而敺使活塞像曏前一樣的曏後，從而提高引擎的速度切斷燃料的耗費。