The pole of the output voltage is connected to the balance housing, which can be grounded for operation.
输出电压的负极与电子天平壳体连接。在进行操作时，电子天平壳体允许接地。
That's why a squirrel can run across an electrical line, but sadly die when its foot makes contact with the (grounded) transformer on the pole at wire's end.
这就是松鼠能够在电线上奔跑的原因，但当它的蹄子与电线端部的杆子上的接地变压器接触时，会可怜地被打死。
And raptors can easily brush against a live wire while settling onto a (grounded) pole-top.
猛禽在停留在(接地的)电线杆顶部时，能够轻易地拂到通电的线路上。
And raptors can easily brush against a live wire while settling onto a (grounded) pole-top.
猛禽在停留在(接地的)电线杆顶部时，能够轻易地拂到通电的线路上。
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