两个重要地区的平均剪应力值分布图，提供了地学的基本数据。
The distribution of average stress value for the two important regions provides basic data for Geology.
目前国内外技术标准均按平均剪应力的概念和方法进行设计，存在严重不合理性和潜在危险性。
At present, all internal and external technical standards adopt the concept and method of average shearing stress for engineering design. This may cause disadvantage and potential risk.
同时在试验的基础上，推导得植树后断面平均流速减小值和植物坝段床面剪应力的计算公式。
And base on the experiment, calculating formula of cross section mean velocity's reduction after planting and bed shears stress of vegetation dam block are established.
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