Within the content model, the items are primarily organized into into three destinct groups: base, metadata, and content.

在内容模型中，项目主要由以下三个不同的组构成：基础、元数据和内容。

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Setting up specialties should base on the vocation groups, adhere to four principles, and adjust the specialties properly according to the change of three big markets and industrial structure.

专业设置以职业群为依据，在设置过程中遵循四大原则，并根据三大市场的变化及其产业结构变动适当调整专业。

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According to the cluster analysis and principle of classification, authors believe that Compositae may be divided into three groups on the base of 31 characters.

按照对31个性状的聚类分析和分类学原理，我们认为菊科可分为三个类群。

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According to the cluster analysis and principle of classification, authors believe that Compositae may be divided into three groups on the base of 31 characters.

按照对31个性状的聚类分析和分类学原理，我们认为菊科可分为三个类群。

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