back-alley butcher [法學(xué)]卑鄙的屠夫back-alley abortion 非法秘密墮胎（同 backstreet abortion）。back-alley adj. 陋巷的；不登大雅之堂的；卑劣的；鬼鬼祟祟的 n. 窮街陋巷；狡詐的手段；（英）街后窄巷back-action clasp [醫(yī)藥科學(xué)]回力卡環(huán)back-ache (n.) back zone phenomenon [醫(yī)藥科學(xué)]后帶現(xiàn)象back yoke height 后約克高back yoke depth 后約克深back yoke 后過肩back yard recordings back yard industry [交通運(yùn)輸工程]小型 工業(yè)back yard garden [農(nóng)業(yè)科學(xué)]后花園back yard [建] 后院back work ratio [航空、航天科學(xué)技術(shù)]回功比back with a vengeance back wiring operation [電子、通信與自動控制技術(shù)]反面布線作業(yè)背面布線操作[計(jì)算機(jī)科學(xué)技術(shù)]反面布線作業(yè)back wire [動力與電氣工程]后部接線[機(jī)械工程]后部接線back winder [機(jī)械工程]回卷機(jī)back where i belong back weld 封底焊縫