The improved coil device has the advantages of convenient connection, external connection line saving and better security.
本实用新型具有接线方便、可节省外接线和安全性较好的优点。
The improved coil device has the advantages of convenient connection, external connection line saving and better security.
本实用新型具有接线方便、可节省外接线和安全性较好的优点。
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