
外部知识获取视角下技术封锁对企业突破式创新的影响研究
The Influence of Technological Blockade on Enterprises' Breakthrough Innovation from the Perspective of External Knowledge Acquisition
外部知识获取;技术封锁;突破式创新;双重差分模型
External Knowledge Acquisition;Technology Blockade;Breakthrough Innovation;Difference in Differences Model
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