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关注:1
2013-05-23 12:21
求翻译:(a dummy that takes on a value of 1 if the firm has introduced a product or process innovation in the period 2008–2010 and 0 otherwise)是什么意思?![]() ![]() (a dummy that takes on a value of 1 if the firm has introduced a product or process innovation in the period 2008–2010 and 0 otherwise)
问题补充: |
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