
要素价格扭曲、行业异质性与R&D投入关系研究——来自中国制造业28个细分行业的证据
the Study of Factor Price Distortion, Industry Heterogeneity and R&D Input
要素价格扭曲, 行业异质性, R&D投入, 门槛模型
Factor Price Distortion, Industry Heterogeneity, R&D Input, Threshold Model
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