[主观题]预算线(Budget line)
[名词解释] 预算线(Budget line)
[名词解释] 直径线 diameterical line
[名词解释] 引入线 lead line
[名词解释] 等收益线(lsorevenue line)
[名词解释] 腋后线(posterior axillary line)
[名词解释] 迂回线 around about line of hump
[问答题] 什么是线锁定同步(line lock)?
[名词解释] 线路中心线 center line of track