The vertex of the angle created by the intersection of rails in a frog or switch.

 
  • 轍叉角在岔心或岔道上,由鐵軌交叉而成的角的頂點(diǎn)
今日熱詞
目錄 附錄 查詞歷史
国内精品美女A∨在线播放xuan