standby positioning备用: reserve; spare; alternate; b ...定位: fixed position; location; or ...通用定位纸: universal plotting sheet车床用定位轴: the parts and units of jigs and fixtures―positioning shaft for lathe代用定位销孔: ausweichstiftloch下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:备用定位,即可在微信中查询翻译