We select 37 industries in China from year 1998 to 2003. Most data comes from the yearbook of Chinese Industry and the yearbook of science and technology of China.
我们选用1998 - 2003年间的《中国科技统计年鉴》和《中国工业统计年鉴》37个工业行业面板数据进行研究。
We select 37 industries in China from year 1998 to 2003. Most data comes from the yearbook of Chinese Industry and the yearbook of science and technology of China.
我们选用1998 - 2003年间的《中国科技统计年鉴》和《中国工业统计年鉴》37个工业行业面板数据进行研究。
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