1)waterproof tester,防水试验机2)IF code protection test against water,防水试验3)Waterproof Test House,防水试验箱4)watertightness test,防渗水试验5)hydrodynamic water resistance test,水力式防水试验6)protection standard,防水试验标准
用法和例句
Investigation of difference between protection standard and fact of switch;