例句與造句

1. Degrees of protection provided by enclosures ; test to check protection against ingress of water , shower tube
   封閉裝置提供的保護(hù)程度.第5部分:防淋浴管進(jìn)水的檢測(cè)
2. Pacific valves ' unique injector has a double ball check protection against leakage and a positive shut - off internal valve
   美國(guó)太平洋閥門獨(dú)特的注入器具有雙球止回保護(hù)，防止泄露，并保護(hù)閥門內(nèi)部活動(dòng)部件。
3. It's difficult to find check protection in a sentence. 用check protection造句挺難的