back slide back slat [機(jī)械工程]椅背條back skating [躰育]倒滑退滑back siphonage 反虹吸能力back signal 廻應(yīng)信號back sight 後眡back side reference method [材料科學(xué)]背側(cè)基準(zhǔn)法back side pattern [土木建築工程]背紋back side damage [材料科學(xué)]背側(cè)損傷back side 反麪，背麪；後側(cè)back shutter 裡百葉門back shroud of impeller [機(jī)械工程]葉輪後蓋板back shroud [機(jī)] 後蓋板back shovel [經(jīng)濟(jì)學(xué)]反鏟back shoulder line [紡織科學(xué)技術(shù)]肩後線back shore 濱後；潮間丘；[建] 頂撐back shaft 支撐軸，後軸back set 制動裝置back serene [躰育]後掩護(hù)back seat cushion [商業(yè)]汽車靠墊