coil stock

例句：

1. 1. The coilstock is used to make electrical connections.
   线圈材料用于制作电气连接。
2. 2. The insulation on the wireprevents it from shortingout.
   电线上的绝缘层防止它短路。
3. 3.The cable is made of copper and hasa high resistance rating.
   电缆由铜制成，具有高电阻等级。