This article introduced the usual terms of grain size, measurement and production control for high -purity barium carbonate. it also presented some measures to control grain size in the production.
介绍了高纯碳酸钡的常见粒度表述术语，评价方法与生产控制手段，为高纯碳酸钡生产中的粒径控制提供了多条途径。
The improvement of the PTC characteristics was induced by the more oxide of the grain boundary of the refiner particle size and an increase of the Barium vacancy.
在高温下，由于钡空位的增加、晶粒较细晶界较多和晶界的氧化作用等增加了材料的PTC效应。
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