农业技术扩散的理论主要有框架理论、沟通理论、农户行为改变理论和技术创新扩散理论。

The paper analyzes the frame structure theory, the communication theory, the behavior alternation theory in products, and theory of the agricultural innovation and technology diffusion.

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因此，对银行技术创新扩散中网络外部性作用的分析具有很好的理论意义和现实意义。

So it is very significant in both theory and reality that the study for how the network externality affects the technological innovations diffusion.

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本文首先回顾了区域技术创新扩散的相关理论。

This dissertation reviews the corresponding theories of regional technology innovation diffusion in the beginning.

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本文首先回顾了区域技术创新扩散的相关理论。

This dissertation reviews the corresponding theories of regional technology innovation diffusion in the beginning.

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