double dentition [醫(yī)藥科學(xué)]雙重牙列double density floppy disk drive [物理學(xué)]雙密度軟磁盤機(jī)double deflection supply grille [動(dòng)力與電氣工程]雙向百葉送風(fēng)口double decomposition reaction double decomposition grease [經(jīng)濟(jì)學(xué)]復(fù)合解潤(rùn)滑脂double decomposition 復(fù)分解double decker bus 雙層公共汽車；雙層巴士double decker 雙層巴士；上下鋪double deck settling basin 雙層沉淀池double deck sedan car [交通運(yùn)輸工程]雙層轎車平車double deck screen 雙層篩double deck box car [交通運(yùn)輸工程]雙層棚車double deck n. 樓中樓；雙層甲板double dealing double dealer double daylight saving time 雙夏令時(shí)double day-off supplement [新聞學(xué)與傳播學(xué)]雙休特刊double date (n.) double data rate synchronous dram [經(jīng)濟(jì)學(xué)]雙倍速資料傳輸double dagger