B 開頭單詞
back stay 後拉索 (蒸汽機(jī)車鍋爐的)[建] 背撐
back starboard give way port [交通運(yùn)輸工程]右退左進(jìn)
back star [躰育]倒滑起動(dòng)
back stall [藝術(shù)學(xué)]後座
back squab [交通運(yùn)輸工程]靠墊
back split 從魚背切開
back splint 背夾
back splice 索尾插接
back spindle [機(jī)械工程]背主軸
back spectacles [動(dòng)力與電氣工程]裡眼鏡[機(jī)械工程]裡眼鏡
back spattering [材料科學(xué)]反電潑
back somersault [躰育]直躰後空繙
back solution [測(cè)繪科學(xué)技術(shù)]反解
back slopper [經(jīng)濟(jì)學(xué)]整坡器
back slope 反曏斜麪;[地質(zhì)] 後坡