The preparation method has the advantages of simplified process, low production cost, easy scale production and good industrial application prospect.
本发明所述制备方法工艺简化，生产成本低，易规模化生产，具有工业应用前景。
With low cost and simple structure, it is easy for large-scale production.
成本低，结构简单，易于大规模化生产。
The preparation method has the advantages of science, reasonability, easy control of operation and scale production.
本发明的制备方法科学合理，操作易控制，可规模化生产。
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