backing-up n. 倒車；[建] 里壁磚；印反面backing-out system 補償系統(tǒng)backing-out punch 沖床backing-out 列車退行backing-off lathe 鏟齒車床backing-off cutting 鏟削backing-off attachment [機械工程]鏟齒裝置backing-off 鏟,退繞backing-mixing 返混backing wind 逆轉(zhuǎn)風(fēng)backing welding electrode [機械工程]底層焊條backing welding 打底焊backing weld 用墊環(huán)的焊縫；[機] 底焊焊縫；打底焊道backing vacuum pump [物理學(xué)]前級真空泵backing up device [計算機科學(xué)技術(shù)]備份設(shè)備backing up 回投；封底焊backing tape [計] 磁帶基backing structure [交通運輸工程]墊襯結(jié)構(gòu)backing store [計] 后備存儲器；存儲器回填；輔助存儲器；將存儲備份backing side trap [醫(yī)藥科學(xué)]前級冷阱