[名词解释] 路港联合编组站 railway-port combined marshalling station
[名词解释] 单向混合式编组站 unidirectional combined type marshalling station
[名词解释] 双向混合式编组站 bidirectional combined type marshalling station
[单选题]“三级三场”式的编组站是()排列的编组站。A . 三个车场呈横向B . 三个车场呈纵向C . 六个车场呈横向D . 六个车场呈纵向
[名词解释] 混合铁路枢纽 combined railway terminal