backsaw短锯
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-propagetion network前馈反向传播神经网络
backstairs political deals幕后的政治交易
back pressure relief valve背压安全阀
back pressure return water余压回水
back calculation of moduli模量反算
back calculation principle反算原理
Back to Kwai Tsing Theatre返回葵青剧院
backing and stopping trial倒退及停航试验