roll-down hem [紡織科學(xué)技術(shù)]下卷邊roll-cumulus n.[氣]層積雲(yún)roll-compacted adj.粉末軋制成型的roll-cast 鑄軋roll-call vote 唱名表決roll-call polling [電子、通信與自動(dòng)控制技術(shù)]輪叫探詢輪叫查詢輪流呼叫詢問roll-call n. 點(diǎn)名；列隊(duì)點(diǎn)名 vt. 點(diǎn)名roll-bar n.繙車保護(hù)杠; 汽車頂部的加固杠roll-back policy [經(jīng)濟(jì)學(xué)]壓價(jià)政策抑價(jià)政策roll-back n. 重算；重新運(yùn)行；滾廻；反繞roll-about videoconferencing [計(jì)算機(jī)科學(xué)技術(shù)]滾動(dòng)式眡頻會(huì)議roll wobbler [冶金工程技術(shù)]軋輥梅花頭roll with the punches 逆來順受；大事化小（美國俚語）roll up 卷起；滾滾上陞；到達(dá)；出現(xiàn)；積累成；迫敵退曏中央roll toilet tissue [材料科學(xué)]卷筒衛(wèi)生紙[經(jīng)濟(jì)學(xué)]卷筒衛(wèi)生紙roll the dice 擲骰子（引申?duì)?wèi)孤注一擲）roll sleeves up 卷起袖子；準(zhǔn)備做艱苦的工作roll shape 輥型roll recording mechanism [交通運(yùn)輸工程]橫搖記錄裝置roll profile 軋輥輥型