One of the first mechanism invented using gears was the clocks. In fact, a clock is little more than a train of gears.

第一个利用齿轮做成的机械装置就是钟表，事实上，它只不过是用了一系列的齿轮。

youdao

The clock spring is operably coupled to another of the gears in the gear train, configured to store mechanical energy supplied by the motor, and configured to drive the control valve.

表簧可操作地联接到在齿轮系中的齿轮中的另一个上，构造成存储由电动机供给的机械能，及构造成驱动控制阀。

youdao

Furthermore, Romax provides the capability to perform structural analysis of an entire gear train system, including compound planetary gear sets of the transmission and hypoid gears of the axle.

此外，Romax软件还能够提供包括多级行星齿轮和准双曲面齿轮系统在内的完整齿轮传动系统的结构分析能力。

youdao