The fundamental particle is the very fine clay particle composed of single crystal, and is the basic unit of mixed layer clays formed by one or several kinds of silicates with the sheet structure.
单元粒子是单晶体构成的细小的粘土颗粒，是由一种或多种层状结构的硅酸盐构成的混层粘土的基本单元。
2
A chemical change is one in which the structure of particle is changed and a new substance is formed.
化学变化是改变粒子结构、形成新物质的一种变化。
3
Special separation structure is adopted. Finer grinding beads or pure zirconium beads can be used to gain ultrafine particle size by just one or two times.