shell insulator

例句：

1. 1. The shell insulator is a crucial component of the electricalsystem.
   绝缘壳体是电气系统的关键组成部分。
2. 2.The engineer designed a new shell insulator to improve efficiency.
   工程师设计了一种新型的绝缘壳体以提高效率。
3. 3. Theshell insulator wasused to protect the electronic componentsfrom damage.
   绝缘壳体被用来保护电子元件免受损坏。