back neck drop 后領(lǐng)深back neck [服裝] 后領(lǐng)口back mutant [醫(yī)藥科學(xué)]回復(fù)突變型[生物學(xué)]回復(fù)突變型back mode [動(dòng)力與電氣工程]撤退方式back mixing [化工] 反混，逆混（管式或塔式反應(yīng)器中軸向混合）back metal 里襯金屬 軸瓦的里襯back measurement [醫(yī)藥科學(xué)]背部測(cè)量法[能源科學(xué)技術(shù)]后測(cè)back matter back marker [計(jì)算機(jī)科學(xué)技術(shù)]背面標(biāo)志back mark [計(jì)] 反標(biāo)記back margin [印刷、復(fù)印技術(shù)]訂口余白back magnetization 反磁化back machine [體育]背部訓(xùn)練機(jī)back lye [能源科學(xué)技術(shù)]井下錯(cuò)車(chē)道back log back lobe 后瓣 后波瓣back links 后桿back link 后連桿back line players [體育]后排隊(duì)員back line 后防線；端線；家畜背線