缓和曲线总长l0是()A、曲线起点到缓和曲线任一点的曲线长度,B、直缓点到缓圆点的曲线长度或缓直点到圆缓点的曲线长度。C、曲线起点到圆曲线任一点的曲线长度。

缓和曲线总长l0是()

  • A、曲线起点到缓和曲线任一点的曲线长度,
  • B、直缓点到缓圆点的曲线长度或缓直点到圆缓点的曲线长度。
  • C、曲线起点到圆曲线任一点的曲线长度。

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