B 開頭單詞

backing-up n. 倒車；[建] 里壁磚；印反面

backing-out system 補(bǔ)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(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]底層焊條

backing welding 打底焊

backing weld 用墊環(huán)的焊縫；[機(jī)] 底焊焊縫；打底焊道

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 回投；封底焊

backing tape [計(jì)] 磁帶基

backing structure [交通運(yùn)輸工程]墊襯結(jié)構(gòu)

backing store [計(jì)] 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