读了一段关与XRD图谱阐释的文献,有些不解,望高人指点。。。
“A broad band indicating the presence of amorphous materials could be observed between 20 and 30 in XRD patterns . Therefore, it can be said that there are amorphous materials in the structure of fine aggregates.”
什么是“ broad band ”?有神马道理所在吗?