The results show that with the increase of milling time, particle size and crystallite size are reduced.
结果表明，随着球磨时间的增加，粉末的颗粒度及晶粒度均不断减小。
It is found that shock wave mainly changes the crystallite size and orientation, but has little effect on its lattice structure.
发现冲击波的主要效应体现为对晶粒的破碎、细化和取向作用，对晶格结构几乎没有影响。
The structure, crystallite size and magnetic properties of powders were investigated by X-ray diffraction and vibrating sample magnetometer.
利用X射线衍射仪和振动样品磁强计对样品的结构、晶粒尺寸和磁性进行了测量和分析。
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