grain composition meaning in English

颗粒成分
颗粒级配
颗粒组成
粒度组成

Experimental study on grain composition of new filling material
新型充填材料颗粒级配试验研究
Based on the close packing and grain composition theory , a new anti - gas channeling lightweight high performance cement slurry system has been developed with industrial drift beads as lightweight additive and superfine gel as strengthening agent
摘要基于紧密堆积和颗粒级配理论，研制了一种以工业漂珠为减轻剂、以超细胶凝材料为增强剂的新型低密度、高强度防气窜水泥浆体系。
Abstract : in light of thicker grain and smaller viscosity of debris flow , a segmented simulation of the debris flow with flume is presented . for the first time . more difficult resistance similarity is brought about by geometric rate without excessive coarsing and discontinuous similarity of sand grain composition in model is eliminated with different grain scale . on this basis the density similarity and sand conveying similarity are achived . the method presented is verified through a model test case
文摘:针对水石流颗粒粗,粘性小的特点,提出了利用水槽进行分段模拟水石流的设想,首次通过几何变率解决难度较大的阻力相似问题,改变了以往过度加糙的方式;通过变粒径比尺的方法消除了模型沙级配不连续相似的问题,较好地实现了固体物质级配相似,达到了泥石流的密度相似和输沙相似.通过水槽概化模型试验实例,对本方法进行了验证