中文摘要：

从企业规模、市场外向度两大视角对我国制造业20个细分行业的集聚程度进行实证分析。研究发现：大部分行业的集聚程度在总体上呈现出不断强化的趋势,行业市场外向度的提高能对其地区集聚形成显著的促进作用,而企业相对规模则与产业集聚呈现出＂U＂型特征;对高、低集聚行业分类考察发现,市场外向度的正向作用仅在低集聚行业中十分显著,而企业规模与产业集聚之间在低集聚行业中所呈现出＂U＂型特征而在高集聚行业中表现出倒＂U＂型关系的现象使得两者在整体上呈现倒＂S＂型关系。研究发现对制定和实施我国的产业集聚与空间布局政策均有相应的参考意义。

英文摘要：

This paper makes an empirical analysis on the 20 industries＇ agglomeration degrees of Chinese manufacturing industries from firm size and external market oriented degree perspectives. The results show that most of the industries＂ agglomeration degrees trend to be continuously strengthening, and a higher external market oriented degree is conductive to upgrade agglomeration degrees significantly. There is a U shaped connection between firm size and agglomeration. After researching high and low concentration industries respectively, the author find that the positive effect from external market oriented degree is only significant in low concentration industry. As for the relationship between firm size and agglomeration, the U shaped connection in low concentration industry as well as inverted U shaped connection in high concentration industry makes an inverted S shape on the whole. These findings have a positive reference value for making and implementing China＇s industrial policy.