How about mechanical work?

那机械功怎么样呢？

Today I completed the mechanical work on the balancer.

今天，我完成了机械工作的平衡。

Don't we have to eat also for all the mechanical work that we do?

我们是不是也要吃掉，我们做的所有机械功呢？

The company undertakes mechanical work on all types of cars.

该公司承接各类汽车的修理工作。

This pressure then forces the piston back down producing mechanical work.

这种压力迫使活塞则回落生产机械工作。