The problems in controlling upper size and lower size of feed into an air solid fluidized bed were discussed, and then an air classification technology of moist raw coal was introduced.
讨论了空气重介流化床分选对入料粒度上下限的控制方法和存在问题，介绍了潮湿原煤空气分级新方法。
Air classification can be used to separate a flour into fractions with different ratios of protein to starch.
气力分级可用来将面粉分成不同蛋白质一淀粉比率的级分。
The effect of the technical parameters on the particle size of the superfine zinc powder from the air-classification is investigated.
研究超细锌粉气流分级技术工艺条件对产品粒度的影响因素。
The effect of the technical parameters on the particle size of the superfine zinc powder from the air-classification is investigated.
研究超细锌粉气流分级技术工艺条件对产品粒度的影响因素。
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