backmen后卫
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 interference背对背干扰
back cut-off power recorder反向截止功率记录仪
Backscattering lidar equation后向散射激光雷达方程
back-up switching equipment进线桥备自投
backscattered electron signal反射层电子信号
backwash-regeneration cycle反冲洗再生循环
back-flushed waste disposal倒灌污水
Backing up files from disk.从磁盘备份文件。