back support 護(hù)背；后撐back substitution [數(shù)] 倒轉(zhuǎn)代換 [數(shù)] 回代back style 背越式（跳高）back strut [機(jī)械工程]反撐back stroke back stretch 反向鋪設(shè)水帶；非終點(diǎn)直道back stress effect [能源科學(xué)技術(shù)]背應(yīng)力效應(yīng)back strength [藝術(shù)學(xué)]背肌力back street 小街back strap joint [醫(yī)藥科學(xué)]貼板接合[交通運(yùn)輸工程]貼板接合back strap 對(duì)接貼板；后吊帶；背墊條back story （電影或故事的）故事背景。back stops back stoping back stopes back stop 倒滑急停；逆行停止back stoop falling [體育]仰臥撐back stitch neck line [紡織科學(xué)技術(shù)]倒牢領(lǐng)窩back step sequence [交通運(yùn)輸工程]后退焊接順序退焊順序back step 退步；后踏板；逐步退焊