我国不同性质企业技术创新效率及其影响因素研究:基于两阶段价值链的视角
아국불동성질기업기술창신효솔급기영향인소연구:기우량계단개치련적시각
Research on Chinese Enterprise's Technology Innovation Efficiency and Its Influencing Factors in Different Property Based on the Angle of Value Chain in the Two Stages