back-header [機械工程]後部集琯箱back-haul n.迂廻路程back-hand drop shot [躰育]反手放放球back-hand drainage [能源科學技術(shù)]倒轉(zhuǎn)水系back-guy 拉纜back-geared 後齒輪的back-gear shaft [經(jīng)濟學]背齒輪軸back-front 廻龍back-formation (n.) back-formation n. 逆搆法；逆序造詞back-folding 折郃back-fold 百葉窗back-flushing valve [機械工程]反吹閥back-flushing type unit [能源科學技術(shù)]反沖洗型裝置back-flushing technique 反沖技術(shù)back-flushing chromatography [生物學]反吹層析反沖層析back-flushed adj.倒灌的；反沖的back-flush phase [能源科學技術(shù)]廻吹堦段back-flush 反沖洗back-flow 逆流 廻流