The method to observe the precipitated calcium carbonate crystal with optical microscope is simple and direct.

介绍使用光学显微镜观察轻质碳酸钙晶体的方法.

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Precipitated calcium carbonate is a good paper filler , the filler retention rate improve after modification.

轻质碳酸钙是良好的造纸填料, 通过改性可有效提高其留着率.

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