backing maneuvers [體育]倒車操縱backing log backing groove of weld [機(jī)械工程]焊縫反面坡口backing for abrasives [經(jīng)濟(jì)學(xué)]砂布底布backing fire backing fabric [紡] 底布backing device 襯墊裝置backing deal 頂板backing copy 備用拷貝backing collision [交通運(yùn)輸工程]倒撞backing card 襯靶紙backing brick 背襯磚backing board 墊板；底板；背紙板backing away 無法維持正常交易 堵墨backing and filling 盤整；躊躇backing a warrant [新聞學(xué)與傳播學(xué)]對憑單背書擔(dān)保backing (n.) backing n. 支持；后退；支持者；襯背 v. 支持（back的ing形式）backimixing [化] 逆向混合; 回混; 反混backhousia myrtifolia