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。
The first aspect expresses the relationship between the structure pattern and grade variation of an indication which is called relative difference of weight values of the indication.
第一方面表征一个标志的构形与等级变化之间的关系，称为标志权相对差。
During mathematics learning of the first grade junior middle school students, it can foster students' varied mathematical abilities by cultivating good cognitive structure mathematics.
在初一学生数学学习中进行良好认知结构的培养能培养多种数学能力。
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