研究表明，当带有铜屏蔽层的电缆作为高压电机绕组时，电机运行时将在屏蔽层内感应很大的涡流；
The results indicate high current will be inducted into copper shield cables when they are used as machine winding.
所述的屏蔽层为一边带粘接剂的铜膜与换能器负极连接。
The shielding layer is a copper film provided with adhesives on one side, and is connected with the negative pole of the transducer.
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