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。
Quartz grain surface textures in coastal dune sand which is mainly derived from beach sand have features characteristic of both typical aeolian environment and inheritable and reformable beach sand.
本文通过对广东和海南海岸沙丘砂石英颗粒的扫描电镜分析，认为其表面结构特征，既具有典型的风成环境特征。
The dune sands are very well sorted and rounded pure quartz sand(>95%) with single mode grain distribution and without suspension materials.
沙丘砂由分选、磨圆好的石英砂组成，含量大于95%，具单众数粒度分布，无悬移质。
Grain shapes of dynamically recrystallized quartz in ductile deformed rocks, characterized by fractal dimension, are statistically self_similar.
韧性变形岩石中动态重结晶石英颗粒边界形态具有自相似性，表现出分形特征。
The grain of tailings is finer with larger specific density, its content of quartz is more and water affinity is weak.
尾矿料颗粒较细，比重较大，石英含量较多，亲水性弱，饱和的疏松的尾矿料具有非常敏感的不稳定结构。
The bulk of the native aluminium occurs in cracks in and along boundaries of jarosite, and only a small amount is present in and along the grain boundaries of quartz.
本自然铝主要分布在黄钾铁矾的端点、边缘或充填在空洞中，少数分布在石英颗粒间。
The results reveal that the main factor which influences the burnability is the grain size of crystal quartz.
结果表明，硅质原料中对生料易烧性产生影响的首要因素是石英晶体的大小。
The effects of solidification time and temperature, types and amount of catalyst, and different grain sizes of quartz sand on sand consolidation effectiveness are discussed.
评价了固化时间、固化温度、催化剂的类型和用量以及不同粒径石英砂等因素对固砂效果的影响。
A research has been made on the effects of the grain size, crystallinity and quantity of crystal quartz in siliceous raw material on the burnability of cement raw meal.
研究了硅质原料中石英晶体大小、相对结晶度及数量对水泥生料易烧性的影响。
The feature include grain size feature, surface feature of quartz sand. geochemistry feature and so on.
所讨论的特征包括黄土颗粒的大小，石英颗粒表面特征，以及地球化学意义，等等。
Agate is a microcrystalline variety of quartz (silica), characterised by its fineness of grain and brightness of color.
玛瑙是一种微晶石英类矿物，纹理细腻，色彩丰富。
Ceramic industry: abrasive materials, alumina, porcelain clay mud, mud and superfine glass powder, refractory material, quartz sand, PVC powder grain tree, citric acid, PE powder, washing powder, etc.
陶瓷行业：研磨料、氧化铝、瓷泥浆、粘土泥浆、玻璃粉、耐火材料、石英砂、PVC树脂粉粒、柠檬酸、聚乙烯粉、洗衣粉等。
Granite is rich in quartz and feldspar in the coarse grain or intrusive rocks, the crust of the most common plutonic rocks from the cooling magma from deep in the crust.
花岗岩是富含石英和长石的粗粒或中粒侵入岩，是地壳中最常见的深成岩，由岩浆在地壳深处冷却而成。
The effect of the grain size distribution of quartz sand, dolomite and limestone on mixing homogeneity of glass batch was investigated.
研究了砂岩、白云石、石灰石的粒度分布的变化对玻璃配合料混合均匀性的影响。
The effect of the grain size distribution of quartz sand, dolomite and limestone on mixing homogeneity of glass batch was investigated.
研究了砂岩、白云石、石灰石的粒度分布的变化对玻璃配合料混合均匀性的影响。
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