基于专利地图的多级离心泵技术预测
Publisher： 国家哲学社会科学学术期刊数据库
E-ISSN： 1002-980x|36|12|105-110
ISSN： 1002-980x
Source： 技术经济, Vol.36, Iss.12, 2017-01, pp. : 105-110
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Abstract