gas tightness
短语词组
- gas -tightness 不透气性
- Gas Storage Tightness 气库密封性
- concrete gas -tightness 混凝土气密性
- Test method for gas -tightness 气密性测试方法
- gas tightness test 气密性试验
- leak gas tightness 密闭度
- capsule gas tightness 气密性
- Gas Tightness Good 气密性好 返回 gas tightness