... And Professional Construction Workers 及专业施工人员 Road Construction Workers 筑路工人 Farmers Turned Construction Workers 农民工 ...
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Conclusions: There are social stratification differences in different groups of road construction workers.
结论筑路工人中存在社会分层。
参考来源 - 滇西某筑路工地不同人群艾滋病相关知识及获取途径研究·2,447,543篇论文数据,部分数据来源于NoteExpress
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