The particle size of nano CaCO3 was measured by using the laser particle size analyser, and sodium hexametaphosphate (na (PO4) 6) as dispersant.
以六偏磷酸钠为分散剂，使用激光粒度仪对自制针形纳米碳酸钙进行了粒径分析。
The sensitive S-B product of laser particle size analyser was put forward in first place, which is important in the design, research and use for this analyser.
首次提出了具有重要实用价值的敏感空间带宽积概念。并介绍了它的主要应用。
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