backfire v.(指內(nèi)燃機等)逆火；適得其反；產(chǎn)生事與愿違的結(jié)果n.逆火；后爆的巨大響聲backfin n.后脊(夾層；軋件舌尖；裂縫)backfilling finish [機械工程]背面上漿整理backfilling bucket 斗式回填機backfilling n. [建] 回填 v. [建] 回填（backfill的ing形式）backfiller n.回填機(復(fù)土機)backfill-conduit 回填管backfill tamper [能源科學(xué)技術(shù)]管溝回填夯實機[土木建筑工程]回填夯實backfill material 回填物料；填充料backfill (n.) backfill n.回填料v.回填backfile [計] 后援文件backfigured date [土木建筑工程]反算的數(shù)據(jù)backfielder 后衛(wèi)backfield player [體育]后場隊員backfield n.后衛(wèi)外野手.backfence 鄰居間的backfeed n.反饋backfat thickness [農(nóng)業(yè)科學(xué)]背膘厚backfat 背膘