leak tightness

• 密封性,密闭度

leak tightness的用法和样例：

例句

1. A valve should not leak, moreover internal tightness is an essential functionality that must be tested and verified before start-up.
   阀门不应该泄漏，而且内部密封性是必须在启动之前就进行测试并检验的一项基本的功能特性。