Furthermore, a portion of space is filled with clay and cementing material. 而且，部分孔隙被粘土和胶结物质填充。
As the most important adhesive and fixative, the chemical composition of the cementing material in the pigment, too, should be clearly understood. 其中的胶结材料作为至关重要的粘合剂和固定剂，其化学构成同样必须查个一清二楚。
美
[sɪ'mentɪŋ]
