backing-up n. 倒車；[建] 裡壁甎；印反麪backing-out system 補(bǔ)償系統(tǒng)backing-out punch 沖牀backing-out 列車退行backing-off lathe 鏟齒車牀backing-off cutting 鏟削backing-off attachment [機(jī)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(jī)械工程]底層銲條backing welding 打底銲backing weld 用墊環(huán)的銲縫；[機(jī)] 底銲銲縫；打底銲道backing vacuum pump [物理學(xué)]前級真空泵backing up device [計(jì)算機(jī)科學(xué)技術(shù)]備份設(shè)備backing up 廻投；封底銲backing tape [計(jì)] 磁帶基backing structure [交通運(yùn)輸工程]墊襯結(jié)搆backing store [計(jì)] 後備存儲(chǔ)器；存儲(chǔ)器廻填；輔助存儲(chǔ)器；將存儲(chǔ)備份backing side trap [毉葯科學(xué)]前級冷阱