For instance, you should make sure that the insulations between the soldering tweezers and welding cable are ok and the earthing point and each termipoint of soldering machine are in good condition.
如
钳和接电缆的绝缘是否有损坏的地方，机的外壳接地和机的各接线点接触是否良好。
For instance, you should make sure that the insulations between the soldering tweezers and welding cable are ok and the earthing point and each termipoint of soldering machine are in good condition.
如钳和接电缆的绝缘是否有损坏的地方，机的外壳接地和机的各接线点接触是否良好。
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