elastic casing

• 弹性外壳

elastic casing的用法和样例：

例句

1. The casing is provided with a self-sealing cover-plate.
   外壳是自动封口的活动盖板。
2. Never use abrasive cleansers or chemical solvents, as they may mar the casing.
   切勿使用研磨性清洁剂或化学溶剂清洁，以免损坏外壳。