It is difficult to predict the results of grinding due to random distribution and shapeofgrain.
由于磨粒形状和分布的随机性,使得预测磨削加工的结果难以实现。
2
When it is pretreated by high pressure roller, all the shapeofgrain like needle, slice, grate, and somes have crack.
高压辊磨预处理后颗粒形貌多为针状、片状和条形状,并且有些颗粒明显存在裂隙。
3
By analysis of sand grain size in sediment microenvironment of modern rivers, the size and shapeofgrain and surface texture feature of quartz grain were described in this paper.