偏開道岔 unsymmetrical double curve turnout: 偏開道岔turnout curve: 道岔曲度double turnout: 復(fù)式道岔, 三開道岔; 雙分道岔; 雙開道岔asymmetrical curve: 非對稱曲線curve of turnout lead curve: 導(dǎo)曲線下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯
