关键词：social capital,guarantee to support agriculture,agricultural guarantee,default risk,intergenerational differences,binary selection model, 社会资本,”担保支农“,农业担保,违约风险,代际差异,二值选择模型

关键词：VAT Credit Refund,Debt Default Risk,Cash Flow,Financing Constraints,Agent Costs, 增值税留抵退税,债务违约风险,现金流,融资约束,代理成本

关键词：digital economy,uneven development,national value chain,labor mobility, 数字经济,不平衡发展,国内价值链,劳动要素流动

关键词：Environmental Administrative Penalties,Green Innovation,Leverage Effect,Spillover Effect, 环境行政处罚,绿色创新,杠杆效应,溢出效应

关键词：Urban integration; Industry; Win-win; Cost reduction, 同城化 制造业 双赢 降成本

关键词：Tax share,Total factor productivity,Value added tax, 省以下税收分成,全要素生产率,增值税

关键词：Social causation,Social selection,Economic selection,Gender disparities,Health outcomes,Older adults, 社会因果,社会选择,经济选择,性别差异,健康结果,中老年人

关键词：wages,infrastructure,developing economies, 工资,基础设施,发展经济学

关键词：peer agglomeration,collusion,labor share,over capacity, 同行业聚集,企业合谋,劳动份额,过剩产能

关键词：New infrastructure investment; Economic catch-up; Industrial structure; Overflow effect, 新型基础设施投资；经济赶超；产业结构；溢出效应