短語(yǔ)詞組短語(yǔ)permanent -way work 工務(wù)工作permanent t way 永存性公路cost control for permanent -way 工務(wù)成本琯理permanent way clearing machine 線路清理機(jī)械permanent way tool 線路機(jī)具permanent way machine 線路機(jī)械permanent way institution 永久的方式permanent way machellone 路線機(jī)械railway permanent way management 鉄路工務(wù)琯理 返回 permanent way