insulation core

例句：

1. 1.The insulation core is crucial for maintaining the electrical integrity of the cable.
   绝缘核心对于保持电缆的电气完整性至关重要。
2. 2. The insulation core plays a vital role in preventing heat transfer between the wires.
   绝缘核心在防止电线之间热传递方面起着重要作用。
3. 3.The insulation core needs to be designed to withstand high voltage and maintain its integrity under extreme conditions.
   绝缘核心需要设计成能够承受高压并在极端条件下保持其完整性。