The economy is not a mechanical device but a living organism . 经济不是一套机械装置,而是活的有机体。
We must supplement human perception by mechanical devices . 我们必须利用机械设备来弥补人类感知的不足。
The next development in arithmetic was the invention of mechanical devices and machines to speed up the execution of arithmetic processes . 算术上的第二项进展是加速算术运算的机械装置和机器的发明。
Valve and filter mechanical devices are sterilized 阀门和过滤装置是经过杀菌处理的。
A mechanical device to wake people up who don ' t have children 用于叫醒没有孩子的人的一种机械设施。