绝缘外壳 meaning in Chinese

insulation envelope

The type vacuum arcing chamber is miniaturization product , adopts copper and chrome contactor material , cup shape and longitudinal magnetic field structure , glass insulation case , sealing type shield barrel in the plate
本型号真空灭弧室为小型化产品，采用铜铬触头材料，杯状纵磁场结构，玻璃绝缘外壳，盘片中间封接式屏蔽筒。
The product vacuum arcing chamber adopts porcelain insulation case , the contactor adopts wolfram and copper material , it has the advantage of reliable performance , long life , small volume , no explosion danger , no pollution environment
该型号真空灭弧室采用陶瓷绝缘外壳，触头采用钨铜材料，具有性能可靠、寿命长、体积小、无爆炸危险，不污染环境等优点。