... 不规则颗粒形状 irregular particle shape 砂颗粒形状 shape of sand grain 颗粒形状系数 particle shape factor ...
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By analysis of sand grain size in sediment microenvironment of modern rivers, the size and shape of grain and surface texture feature of quartz grain were described in this paper.
本文根据现代河流的已知沉积微环境中的砂样分析，阐述了河北平原河流沉积物的粒度成分、形态和石英颗粒的表面结构特征。
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