gas tightness
短語詞組
- gas -tightness 不透氣性
- Gas Storage Tightness 氣庫密封性
- concrete gas -tightness 混凝土氣密性
- Test method for gas -tightness 氣密性測試方法
- gas tightness test 氣密性試騐
- leak gas tightness 密閉度
- capsule gas tightness 氣密性
- Gas Tightness Good 氣密性好 返回 gas tightness