Quartz and silica electrothermal products 石英电热制品和二氧化硅电热制品
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；
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