... 地磁感应器 earth inductor 对地绝缘，主绝缘(电机的) earth insulation (焊接接地用)地线，接地地线，接地引线，接地线 earth lead ...
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track to earth insulation 轨道绝缘
Insulation for tank earth protection 箱体接地绝缘保护
Its main types are magnesium silicate composite insulation material, silicon magnesium aluminum composite insulation materials and rare earth composite thermal insulation material.
它的材料主要种类有硅酸镁复合保温材料、硅镁铝复合保温材料和稀土复合保温材料。
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；
Under several metres of earth, noise is minimal and insulation is excellent.
在地面下几米，噪音变小并且绝缘性能很好。
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