短語詞組短語air tightness test 氣密試驗;氣密性試驗;氣密測驗考試air - tightness test 氣密性試驗seal tightness test [電子]密封性試驗tightness test of transformer 變壓器整體密封試驗Tightness test pressure 氣密性試驗壓力;致密性試驗壓力cavern tightness test 密封性檢測方法vacuum tightness test 真空系統(tǒng)嚴密性試驗Vacuum system tightness test 真空嚴密性試驗 返回 tightness test