Based on non-uniformity,the grain shape coefficient is introduced. By analyzing influence of shape coefficient and exposure degree,the formulas for calculating equivalent grain and the incipient motion condition of non-uniform sediment are established by the relative exposure degree and shape coefficient.
根据非均匀沙颗粒的不均匀性,引入颗粒形状系数,通过分析泥沙颗粒形状系数和相对暴露度的影响,建立了等效粒径表达式;并通过泥沙起动受力分析,推导得到泥沙起动临界条件表达式。
参考来源 - 泥沙颗粒形状对非均匀沙起动条件的影响·2,447,543篇论文数据，部分数据来源于NoteExpress
犯罪社会学中的间接约束因素指犯罪暴露度与文化规范。
The indirect restriction factor refers to uncovery extent of committing crime and culture criterion.
并对不同粒径，在床面不同位置的暴露度、暴露度系数及等效粒径进行了计算。
Calculations of exposure degree, exposure coefficient and equivalent grain size for grains with various size located at different position relative to the riverbed are carried out.
雪茄烟和香烟，这两个二手烟的重要来源只是靠近人体的污染源中的相对较小的来源，因此环境烟海的暴露度非常局限。
Igars and cigarettes, the primary source of ETS [environmental tobacco smoke], are smaller sources that emit pollutants near people and thereby exposures to ETS are very localized.
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