问题：
[名词解释] 混轨线 mixed track
问题：
[名词解释] 换装线 transhipment track
问题：
[名词解释] 换轮线 transpose wheel track
问题：
[名词解释] 换装站台 transhipment platform
问题：
[名词解释] 一站铁路枢纽 railway terminal with one station
问题：
[名词解释] 三角形铁路枢纽 triangle railway junction terminal
问题：
[名词解释] 十字形铁路枢纽 cross-type railway terminal
问题：
[名词解释] 并列式铁路枢纽 parallel arrangement-type railway terminal
问题：
[问答题,简答题] 简述环形、半环形铁路枢纽 loop，halfloop railway terminal。
问题：
[名词解释] 尽端铁路枢纽 stub-end type railway terminal
