对开道岔 symmetrical turnout

[名词解释] 三开道岔 three-throw turnout

[判断题] 按道岔的结构不同可分为普通单开道岔、对开道岔、单式交分和复示交分道岔四种。A . 正确B . 错误

[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] 道岔号数 turnout number

[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

[名词解释] 单开道岔