目的：对紫河车细粉和超微细粉体进行表征研究。
Objective:to study the characterization of the fine powder and the superfine powder of Placenta Homins.
本论文以功能陶瓷超微细粉体的制备及应用为研究目的，选取了当今功能陶瓷领域具有代表性的三种材料为主要研究内容。
In this thesis, three kinds of functional ceramics with representative characters were chosen as main studying materials to investigate the preparation and application of ultrafine ceramic powders.
在塑料填充改性领域中，一般采用超微细或纳米无机粉体作为填充材料。
In the field of filled modified plastics, the superfine or nanometer inorganic powders usually were used as a filling materials.
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