When raw materials were preheated to 1000-1300 ℃ by electricity and microwave was inputted for 1 min 5 s-4 mins, then a......

马滩地区的大隆组,以火山碎屑岩和硅质岩沉积为主.镜下研究表明,火山碎屑岩可分为凝灰岩、沉凝灰岩和凝灰质沉积岩3亚类共8种岩石......