B 開(kāi)頭單詞
backing-up n. 倒車(chē)；[建] 里壁磚；印反面
backing-out system 補(bǔ)償系統(tǒng)
backing-out 列車(chē)退行
backing-off lathe 鏟齒車(chē)床
backing-off attachment [機(jī)械工程]鏟齒裝置
backing-off 鏟,退繞
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(jí)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(chǔ)器；存儲(chǔ)器回填；輔助存儲(chǔ)器；將存儲(chǔ)備份
backing side trap [醫(yī)藥科學(xué)]前級(jí)冷阱