On the basis of freeboard phenomenon in curve way and the improvement of curve flow velocity, this paper gets a useful calculating method of bed roughness.
本文基于弯道超高现象以及弯道流速计算的改进，得出了一种较为实用的泥石流沟床糙率计算方法。
This paper analyses the defects existing in the method of maximum grade compensation in curve location provided in (GB50090-99) in force, and puts forward some Suggestions for improvement.
分析了现行《线规》(GB50090 - 99)中曲线地段最大坡度折减方法存在的缺陷，并提出改进意见。
By making use of characteristic curve of sampling inspection, this paper analyses the irrationality of sampling inspection by percentage, and gives a method of improvement.
利用抽检特征曲线，分析百分数抽检的不合理性，并给出了改进的方法。
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