曲线半径为650m的到发线,圆曲线正矢连续差允许偏差为()。A.6mm B.8mm 发布时间:2017-06-30 12:23 │ 来源:www.tikuol.com 题型:单项选择题 问题: 曲线半径为650m的到发线,圆曲线正矢连续差允许偏差为()。A.6mm B.8mm C.10mm D.12mm
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