词Sand Mineral particles consisting mainly of quartz, felspar, and mica, and measuring between 2 and 0.05mm in diameter.
沙：主要由石英、长石、
母等矿物微粒构成，其直径在0.05~2mm之间。
Sand Mineral particles consisting mainly of quartz, felspar, and mica, and measuring between 2 and 0.05mm in diameter.
沙：主要由石英、长石、母等矿物微粒构成，其直径在0.05~2mm之间。
In this paper, the research process of the fire - proof calcium silicate board trial - produced with theindustrial tailings - felspar powder is reported.
本文报道了使用工业尾矿长石粉试制防火硅酸钙板的研究过程。
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