属性是字符串的键-值对，具有下面的结构。
The attribute is a key-value pair of strings with this structure.
这些层状粘土矿物具有取代结构和断面余键两个吸附活性中心。
The layered clay minerals have two active adsorptive centers, i. e. the replacing structure and the residual bond on fractured surface.
利用化学键的观点定量地研究了一些具有各种晶体结构实用材料的介电性质。
From the chemical bond viewpoint, dielectric properties of some practical materials with various crystal structures were quantitatively studied.
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