从经济学角度，乡村旅游开发具备强外部性和公共性特征，属于市场失灵的传统领域。
From the Angle of economics the development of country touring has strong characteristics of exterior and communal that belonging to the traditional realm of market failure.
共性技术概念的提出是从经济和管理视角对技术本质及特征的深化认识。
Proposed conception of Generic technology was that the perceptibility of connotation and characteristic about technology was deepened with the view of economy and management.
从经济学角度，乡村旅游开发具备强外部性和公共性特征，属于市场失灵的传统领域。
From the Angle of economics, the development of country touring has strong characteristics of exterior and communal that belonging to the traditional realm of market failure.
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