水密性 meaning in Chinese

water impermeability
water proofness
water tightness
watertightness

Windows and doors - watertightness - test method
门窗.水密性.试验方法
For watertight bulkheads , how do you check the watertightness
就水密舱壁而言，怎样检查其水密性？
Windows and doors - watertightness - test method ; german version en 1027 : 2000
门窗.水密性.试验方法
Windows and doorsets - watertightness test under dynamic pressure
窗和门组合件.动态压力的水密性试验
Curtain walling - watertightness - laboratory test under static pressure
幕墙.水密性.实验室静压试验

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