The fan is usually mounted on an extension of the water pump shaft and is driven by V-belt from a pulley mounted on the front end of the cramshaft.

风扇常常装在水泵轴的伸出物上，由安装在曲轴前段的滑轮上的v带驱动。

youdao

In these devices, one of the shafts is typically driven by a motor or pulley, and the other shaft is driving another device.

在这些装置中，典型的情况是，一根轴由发动机或皮带轮传动，另一根轴将动力传递给其他部件。

youdao

The rails pass up to the top of the shaft, where they are taken over a pulley which can be driven in either direction by an electric motor.

导轨直通到升降井顶部。钢丝绳在顶部绕过一个滑轮。滑轮由电动机驱动可向任一方向转动。

youdao