n.变速齿轮箱 infinitive variable gear box: 无级变速齿轮箱variable speed box: 变速装置hydraulic variable-speed gear: 液压变速齿轮variable speed gear: 变速齿输; 变速机构, 变速机; 变速装置variable speed wheel gear: 变速轮装置下载手机词典可随时随地查词查翻译