... via resistance 释义：通路电阻 mains resistance 释义：电源电阻 threshold resistance detector 释义：阈值电阻检测器 ...
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mains frequency resistance welding machine 工频电阻焊机
The operating value of earth leakage protection can be changed with the mains voltage, but the operating value of cables insulation resistance is held the line.
该设计可以根据电网电压的波动调整动作值，从而保证电缆绝缘电阻的动作值不变；
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