英语词汇“double non-return valve”的翻译、意思、用法、释义-英汉双解词典-注文网

单词	double non-return valve
释义	double non-return valve 双向止回阀
随便看	direct-current erase direct-current erasing head direct current excited field generator direct-current excited-field generator direct current excited iron core reactor direct-current excited reactor direct current experiment direct-current experiment direct current furnace direct-current generating set direct-current generator direct current generator direct-current graphitization direct-current grid bias direct current heating direct current holdover voltage direct current impulsing direct current in fact direct-current inserter direct current instrument transformer direct current keying direct-current key pulsing direct current level direct current load direct current locomotive 济困扶危济寒赈贫济弱扶倾济弱锄强济河焚舟济济一堂济窍飘风济苦怜贫济贫拔苦浏かんかんかん【乾】かん【冠】かん【函】かん【刊】かん【勘】かん【勧】かん【喚】かん【堪】