Social Stratification research is a theoretical and practical problem which was focused on by sociologists.
社会分层研究一直是社会学家们所重点关注的理论问题和现实问题。
参考来源 - 结构化：西北乡村社会阶层分化及其后果的实证研究·2,447,543篇论文数据，部分数据来源于NoteExpress
此章主要分析了社会分层研究中的两个重要概念——阶级和阶层。
The chapter analysed two important concepts of the study of social stratification, class and stratum.
在社会分层研究中，学者们更注重大城市中产阶层的收入、受教育程度、社会地位等方面的分化。
In the study of social stratification, scholars focus more on the income of the middle class in large cities, education, social status and other aspects of differentiation.
对工作流过程模型进行分层研究，提出了三层架构的工作流过程模型：元模型层、模型层和控制模型层。
Through the hierarchical research of workflow process model, it is put forward three levels of workflow process models: meta model level, model level and control model level.
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