A device consisting of fixed and moving parts that modifies mechanical energy and transmits it in a more useful form. 機床一個(gè)由固定和可移動(dòng)部件組成的裝置，可以把機械能轉化為其他更為有用的形式
The technology of using the flows and pressures of fluids in sensing, control, and information-processing systems with no moving parts. 射流技術(shù)一種利用流體動(dòng)力現象使不運動(dòng)部件來(lái)完成傳感、控制和信息傳送等功能的控制技術(shù)
Oil the moving parts of this machine regularly. 要定期給這部機器的運轉部件上油。
In order to reduce friction, the moving parts of a machine are often oiled. 為了減少摩擦，機器的可動(dòng)部件常常涂上潤滑油。
