矽线石 xīxiànshí sillimanite Definitions Defs Origin Strokes Stroke Words Sentences Sents 矽线石 矽線石 xīxiànshí sillimanite An aluminosilicate mineral used in the production of high-grade refractory materials
矽线石 矽線石 xīxiànshí sillimanite An aluminosilicate mineral used in the production of high-grade refractory materials
