4 , the proportion of China's primary industry demonstrates a decreasing trend, the secondary industry's share gradually declines, whereas the tertiary industry's proportion increases.
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The spatial spillover effects of clean energy consumption and production on sustainable economic development in China.
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The sentences
The optimization of local clean energy consumption structure means that more fossil energy flows to the neighboring areas, resulting in the neighboring areas not only difficult to improve the environmental performance, and backward production methods in the short term, it is difficult to rely on fossil energy to have a clear trend of economic growth.