什么是leakage test?

什么是leakage test? sneak leakage leakage意思 Water leakage Where a He-leakage test is required in the Technical Data Sheet,...这句话中的He-leakage是什么意思啊整句为：Where a He-leakage test is required in the Technical Data Sheet,this test has to follow ASTM E498 (vacuum) or ASTM E499 (pressur 请问什么是t-test 什么是job test 什么是college board test? 什么是abuse test 英语翻译4、Check After Test DrivingWalk around your vehicle after parking and check whether there are any oil leakage,water leakage or air leakage.5、OthersAll above checks are what you should do before driving out.If you find any abnormal phen 什么是lack-of-fit test 什么是lack-of-fit test leakage inductance是什么意思, ear leakage什么意思 Input leakage current是什么意思 leakage current breaker是什么意思 current leakage 是什么原因 Earth leakage breaker是什么意思