Studies on China's economic development in strategic circumstances Study on China's economic development in the new era Study in China's economic development after WTO accession 并列题名：Study on China's economic development in the new era Study on marine economic development and cooperation in Northeast Asia Study on marine economic development plan of Yantai city Study on regional economic development of Mongolia Study on China's shale gas development strategy and policy system Study on county economic development models Research on China-Africa economic cooperation under new circumstances