在讨论操作参数时，同样要面对粒度的问题。
We again come to the question of granularity when we consider operation parameters.
从这些参数比较表明，颗粒度的大小对反应活性存在明显的影响。
These parameters demonstrate that particle size has great effect on the reaction activity.
从这些参数比较表明，颗粒度的大小对反应活性存在明显的影响。
These parameters demonstrate that particle size has great effect on the reaction activity.
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