短語(yǔ)詞組短語(yǔ)water -tightness 阻水性;不透水性Water Valve Tightness Test 水中閥體密封性試驗(yàn)Water -tightness test under dynamic pressure 動(dòng)態(tài)壓力下不透水性試驗(yàn)water r tightness 水密性air -tightness or water-tightness 氣密或水密封的field water tightness test 現(xiàn)場(chǎng)水緊張測(cè)試;水密性試驗(yàn);現(xiàn)場(chǎng)水密性試驗(yàn) 返回 water tightness