A four - grade pore structure model was brought forward for the first time, while all the previous structure models were evaluated.
首次提出了分四级描述的结构模型，评价并总结了前人所提出的结构模型。
A four - grade pore structure model was brought forward for the first time, while all the previous structure models were evaluated.
首次提出了分四级描述的结构模型，评价并总结了前人所提出的结构模型。
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