它所强调的规模收益递增、外溢效应、专业化人力资本积累等，是对传统经济增长理论的重大突破。
Emphasizing on the increasing returns to scale, spillover effect and accumulation of specialized human capital, the endogenous growth theory is a breakthrough in this regard.
原因是人口和资源的空间集聚产生了规模收益递增的效应。
The reason is the spatial concentration of population and resources had the effect of increasing returns to scale.
结论三：广东省大型企业和小型企业存在规模递增效应，中型企业存在规模递减效应。
The third conclusion: large business and small business is scale increase effect . middle business is scale descending effect in GuangDong.
结论三：广东省大型企业和小型企业存在规模递增效应，中型企业存在规模递减效应。
The third conclusion: large business and small business is scale increase effect . middle business is scale descending effect in GuangDong.
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