internal conductor

例句：

1. 1. The internalconductor is crucial for the electrical systemto function properly.
   内部导体对于电气系统正常工作至关重要。
2. 2. The engineers carefully inspectedthe internal conductor before installing the newwiring.
   工程师们在安装新电线之前仔细检查了内部导体。
3. 3. Theinternal conductor was designedto withstand high voltage andheat.
   内部导体被设计成能够承受高电压和高温。