reciprocating piston engine的用法和樣例：
例句
- It is also generally conceded that Wankel engines are quieter than comparable piston engines.
轉子發(fā)動(dòng)機比通常的活塞式發(fā)動(dòng)機噪音小也是大家所公認的。 - In a radial engine all the cylinders are set in a circle and all point toward the center of the circle.
在徑向式發(fā)動(dòng)機里，所有的氣缸都布置在一個(gè)圓圈里，而且都指向圓心。
