ultra fine classification
ultra fine classification
超细分级
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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The study status of dry classification theory of ultra-fine powder was reviewed, and the trend of ultrafine powder classification was prospected.
综述了超细粉体干法分级的理论研究现状，并对超细粉体分级的发展趋势进行了展望。
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