| http://www.w3.org/ns/prov#value | - The reason for defining the powder bulk density within the range is that if it is less than 5%, the compression ratio of the powder at the time of molding elevates excessively to make the molding operation difficult to carry out, while when it is greater than 46%, there are a case where the particle size distribution of the granules is relatively broad and a case where the apparent granule density
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