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关注：1
2013-05-23 12:21
求翻译：makes the coefficient insignificant, pointing to constant returns to scale. Again, compared with Model M0, adding citation weighted patent stocks (Model M3) makes the coefficient insignificant. Adding trademark stocks (Model M3a) even renders the是什么意思？ 待解决
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makes the coefficient insignificant, pointing to constant returns to scale. Again, compared with Model M0, adding citation weighted patent stocks (Model M3) makes the coefficient insignificant. Adding trademark stocks (Model M3a) even renders the
问题补充： |
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