Not careful case in water, can be called a silica particulate matter and have water quartz watch Together into a closed container, a few hours later, remove the quartz watch, water is all disappeared.
不小心表壳内进水了，可用一种叫做硅胶的颗粒状物质与已经积水的石英表一起放进一个密闭的容器内，数小时后，取出石英表，积水即全部消失。
Objective To find out the causes and the harm extent of this serious Silica dust hazard event and discuss the prevention and control measures for small scale quartz workplace.
目的了解造成本次严重矽尘危害事件的原因及危害程度，探讨小型石英粉加工企业矽尘危害的预防和控制措施。
So the research of producing the high pure quartz with the silica mineral substitutes for natural quartz is imminent.
本文综述了国内外硅石矿物原料替代天然水晶生产高纯石英砂的研究现状；
石英石：硅质矿石。
Laboratory, hygienic or pharmaceutical glassware, whether or not graduated or calibrated, of fused quartz or other fused silica.
实验室、卫生或医疗用之玻璃器，已否刻度或校正者均在内，属熔凝石英或其他熔化硅砂制者。
Quartz crystal silica content by up to 99.9%, and in the manufacturing process to the complex purification, does not contain any can cause radiation metal components.
所采用的石英结晶二氧化硅含量高达并在制造过程中去杂提纯，不含任何能导致辐射的重金属成分。
The combined effect of natural zeolite and fly ash on alkali-silica reaction (ASR) of concrete was studied with natural alkali-reactive aggregate and quartz glass aggregate respectively.
用天然活性骨料和石英玻璃骨料研究了粉煤灰与沸石的复合对碱-硅酸反应(asr)的影响。
A high purity silica mending material with pure fused quartz as material for glass kiln has been developed.
以高纯熔融石英为主要原料研制了一种高纯硅质玻璃窑用热补料。
The silica bricks of high refractoriness, high loading and heavy melting point made of large crystalline quartz have already increased the life to 5 times.
用大结晶脉石英制成高耐火度、高荷重软化点硅砖，使用寿命提高5倍以上。
Through controlling the sodium silicate of surfactans and the pH of quartz powder suspending liquid, the ultra-fine silica powder was prepared by using stirred mill.
通过控制硅酸钠的添加量和悬浮液的pH值，利用搅拌磨制备出了超细石英粉体。
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。
Such as Natural Dolomite stone, River Sand, Silica Sand, Construction Sand, Quartz stone and much more.
如自然白云石石料，河砂，石英砂，建筑砂，石英石等等。
Such as Natural Dolomite stone, River Sand, Silica Sand, Construction Sand, Quartz stone and much more.
如自然白云石石料，河砂，石英砂，建筑砂，石英石等等。
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