改进是创新 优化也是创新

Publisher: 国家哲学社会科学学术期刊数据库

E-ISSN: 1673-940x|volume|4|35-35

ISSN: 1673-940x

Source: 科技创新与品牌, Vol.volume, Iss.4, 2015-01, pp. : 35-35

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Abstract