backsiphonage n.反虹吸；回吸；反吸backsiphon n.回吸；反吸backsight n.后視；表尺backside-illumination n.后部照明backside rinse [材料科學(xué)]背面沖洗backside chipping [電子、通信與自動控制技術(shù)]背面崩裂backside (n.) backside n. 背部；后方；臀部backshunt 反向推車器backshot n.排氣管內(nèi)爆音backshore terrace 濱后階地backshore 濱后,后濱backshop backshock 反沖backshish 津貼backshift 準(zhǔn)備班,交叉班backshield 散射線遮擋, 散射線屏蔽backshell n.后殼backsheesh n.酒錢；小費(fèi)backshank 針尾