relay-coil resistance
... relay coil dissipation 继电器线圈耗散,继电器线圈损耗 relay coil resistance 继电器线圈电阻 relay coil serving 继电器线圈覆盖层,继电器线圈外皮 ...
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经查是与四通阀线圈串联的控制继电器触点接触不良，电阻增大，致使电压降低。
The check is in the series of coil and four-way reversing valve control relay contact resistance increases, the bad, the contacts the voltage reduced.
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