When possible, try to maintain a single system ground point.
如果可能，应尽量采用单一的系统接地点。
The cure for such ground loops is to ground all equipment at a single point.
解决这种地回路问题的方法是将所有的设备在一个单点接地。
Operation mode can be divided into the upper and lower control and ground single control, but also point up point drop, multilayer control.
操作方式可分为上下控制和地面单人控制，也可点升点降、多层控制。
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