bull-head rail

什么意思_英语head_rail在线翻译_有道词典... ... double head rail 双头轨条 bull-head rail 圆头钢轨 double-head rail 双头轨 ...

http://www.ptsgi.com/chinese... ... "大潮"," Spring tide" "大头轨条"," Bull-head rail" "大镰刀"," Scythe" ...