mechanical機(jī)械工程: mechanical engineering的: 4次方是 The fourth power of 2 i ...【機(jī)械工程】暗接。: secret joint【機(jī)械工程】擺桿。: swing link【機(jī)械工程】瓣閥。: clack valve下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯