并列题名：Research on population change and adjustment of school layout Research on population change and adjustment of school layout 并列题名：Research on population spatial changes and regulation in China's megacities 并列题名：Research on climate change and environmental governance 并列题名：Research on population and household consumption change 并列题名：Research on the review and assessment of regulations 并列题名：Research on the institutional change and innovation of Hi-tech firms 并列题名：Research on the Contribution Rate Level and Adjustment of China's Social Insurance System