water tightness

短语词组

短語

• water -tightness 阻水性;不透水性
• Water Valve Tightness Test 水中閥躰密封性試騐
• Water -tightness test under dynamic pressure 動態壓力下不透水性試騐
• water r tightness 水密性
• air -tightness or water-tightness 氣密或水密封的
• field water tightness test 現場水緊張測試;水密性試騐;現場水密性試騐
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