The results showed that catalytic activity and bulk density of the product particles increased and the size distributions of the product particles narrowed with the using of prepolymerization method.
结果表明，预聚合使催化活性增大、产物堆密度增大、颗粒大小均匀。
The results showed that catalytic activity and bulk density of the product particles increased and the size distributions of the product particles narrowed with the using of prepolymerization method.
结果表明，预聚合使催化活性增大、产物堆密度增大、颗粒大小均匀。
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