This thesis is to measure the chemical components of stone with X-ray fluorescence method and to measure the grain-size distribution of stone dust by means of centrifugal grading analytic instrument.
本文使用X射线荧光法测定石粉的化学组成成分，通过离心式粒度分析仪测定石粉的粒度分布。
参考来源 - 变质岩废弃物石粉部分替代水泥的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Sand washing machine is coordinated with sand Maker to separate the sand from stone dust.
用于清洗分离砂石中的石粉泥土，是配合制砂机使用的一种高效洗砂选矿设备。
The increment of stone dust from 4.3 to 20% did not adversely affect the strength, and the abrasion loss of concretes was reduced.
随着机制砂中石粉含量从4.3%增加到20%，对混凝土强度无不利影响，磨损量逐步减小；
Exposure to asbestos, chemicals, acids, solvents, or coal or stone dust was not associated with a higher risk, the researchers said.
与石棉、化学试剂、酸、有机溶剂、煤以及石灰等接触，并没有显示出更高的患病风险。
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