问题
问答题 简答题
导曲线支距是指什么？
答案
参考答案：
系指外直股钢轨工作边至导曲线外股工作边的垂直距离。
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导曲线支距是指什么？
参考答案：
系指外直股钢轨工作边至导曲线外股工作边的垂直距离。
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