Objective To study the preparation of Placenta Hominis superfine powders and to investigate its quality control methods .

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The weaving of superfine high density fabric has great difficulty the demand of warp sizing quality is higher .

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The construction of superfine courses that is a key component of the higher education reform project is important to improve the quality of the higher education .

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The maturation of information technology provides powerful tool for the university physical education curriculum teaching . Teachers can fully exert the roles of superfine tennis course ; reasonably and effectively use information technology to improve the quality of teaching .

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Application test showed that after ultrafine crushing calcination superfine pulverization and surface modification by silane coupling agents the kaolin powder can be used as the functional filler of high quality cathode electrophoresis paint with the better filling properties than the kaolin abroad .

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To enhance size beam quality of superfine count yarn several processing measures and quality control index were proposed according to raw yarn quality equipment condition processing parameters operation methods and so on .

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Surfactant used in the preparation of superfine ceramic powder can greatly reduce energy consumption and improve dis - persion rate and application quality of ceramic materials .

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According to the existing domestic raw materials the essay analyzed spinnable properties of the superfine cotton yarn at domestic cotton spinning equipment it also predicted and estimated the yarn quality .

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