dielectric body

例句：

1. 1. The dielectric material is crucial for maintaining electrical integrity.
   介电材料对于保持电气完整性至关重要。
2. 2. The insulator was designed to prevent short circuits in the electrical system.
   绝缘体被设计来防止电气系统中的短路。
3. 3.The dielectric properties of the material were tested to ensure its suitability for use in high-voltage applications.
   该材料的介电性质经过测试，以确保其在高压应用中的适用性。