back-flip n.背摔

back-flashover 反擊

back-flap 百葉窗

back-firing 迎面火

back-fire relief valve 阻火器

back-fire relief device [物理學(xué)]消除逆火裝置

back-fire arrester [能源科學(xué)技術(shù)]回火防止器

back-fire 回火 逆火

back-filling temper [土木建筑工程]回填夯實(shí)機(jī)

back-filling 回填充 倒填充

back-fill tamper [機(jī)械工程]回填搗塞機(jī)

back-fill n.反填充

back-fence 鄰居的

back-feeding 反哺

back-face exposure method [動(dòng)力與電氣工程]反面曝光法

back-extraction 反萃

back-extract 反萃取

back-ender n.追尾事故

back-end processing [計(jì)算機(jī)科學(xué)技術(shù)]后端處理

back-end network [計(jì)算機(jī)科學(xué)技術(shù)]后端網(wǎng)