backman辅助工
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-to-back credit letters背对背信用证
backscattering models of waters水体后向散射模型
back-lighted plotting surface反光绘图面
Back engagement of cutting edge背吃刀量
back - calculation for module模量反算
back geared upright drill press带齿轮立式钻床
back dynamometer with indicator指针型背力计
backfilling approach embankment台背回填
Backs up the entire database.可以备份整个数据库。