结果表明：名义尺寸相同而实际尺寸相差较大的磨球所磨出的粉体粒度大且分布不均匀，烧结体硬质相颗粒粗大且等轴性差，抗弯强度和硬度均较低。
It is found that the grain size of the powders milled by balls with different diameters is big, the hard phase is big too and not uniform, the hardness and bending strength are also lower.
但原始激光束光强的不均匀分布影响了陶瓷改性的一致性，不利于激光烧结工艺的准确控制，严重者还会损坏陶瓷。
However, the intensity of original laser beam spot can not be distributed uniformly, which is bad for controlling the laser sintering condition. And the ceramics may be destroyed.
烧结矿的孔隙是烧结矿的重要性质之一，但由于烧结矿的多相性和不均匀性，使得孔隙结构的研究极其复杂。
The pores in sinter are an important character. Because of sinter's multiphase and asymmetry, the research of pores is very complex.
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