The concepts of key contradiction and contradictory flow are introduced. Some properties of key contradiction are studied. The key contradiction method for solving non compatible problems is proposed.
引入关键矛盾和矛盾流的概念，研究了关键矛盾的性质，提出解决矛盾问题的关键矛盾法。
The concepts of key contradiction and contradictory flow are introduced. Some properties of key contradiction are studied. The key contradiction method for solving non compatible problems is proposed.
引入关键矛盾和矛盾流的概念，研究了关键矛盾的性质，提出解决矛盾问题的关键矛盾法。
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