backingn.支持;背衬;伴奏动词back的现在分词.
backn.后面;背脊;靠背;后背;后卫vt.支持;后退adv.向后地adj.向后的;后面的;偏远的;过时的;积欠的
back-filling in layers分层回填
back regression analysis反演回归分析
Back to ice maker series返回制冰机专刊
back-coupled generator反馈振荡器
Back-flushing pressure反冲压力
back reinfored knife saw夹背刀锯
back-style high-jump背越式跳高
backing-off attachment铲齿附件,铲磨工附件
back-scattering factor反散射因子
back silting of sediment泥沙回淤强度