backemfn.反电动势
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[法] 背对背信用状, 对开信用状
back-pressure curve回压曲线
back scattering ratio反(向)散射率
back pack transmitter背负式发射机
Back-striped weaseln.背纹鼬
back - edge cutting螺旋桨切边
back scatter constant[医] 反向散射常数
backfilled regulation回填规则
Back to the Holy Land
backscattering effect反射层效应