Some, like carpenter ants, can undermine a home structure, while others interfere with the electricalunits.
一些蚂蚁，比如木蚁，会破坏房屋结构，而另一些蚂蚁则会干扰电器装置。
2
The methods and steps in installing and adjusting the mechanical, optical and electricalunits are briefly explained.
还简要地说明了机械、光学及电器部件安装、调试的方法和步骤。
3
The mine hoist equipment is one of the main mine pit production equipment. It is a set of complex mechanical electricalunits and the main tool of coal production and transportation.