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关注:1
2013-05-23 12:21
求翻译:general researchers have used several indicators avoiding endogeneity problems prudently. For instance, it is assumed that there is a positive correlation between the number of inventors and patent values, but should the number of researchers in the field increas是什么意思? 待解决
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general researchers have used several indicators avoiding endogeneity problems prudently. For instance, it is assumed that there is a positive correlation between the number of inventors and patent values, but should the number of researchers in the field increas
问题补充: |
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