[名词解释] 道岔侧线 siding of turnout
[名词解释] 道岔中心 center of turnout
[名词解释] 对开道岔 symmetrical turnout
[名词解释] 单车道岔 simple turnout
[名词解释] 道岔主线 main line of turnout
[名词解释] 道岔导曲线 lead curve of turnout
[名词解释] 三开道岔 three-throw turnout
[问答题] 道岔号数如何表示?道岔号数大小对行车有什么影响?
[判断题] 辙叉号数亦称道岔号数。A . 正确B . 错误