求翻译：从经济学的角度来看，建筑节能技术推广应用面临的主要问题是经济的外部性问题。外部性是建筑节能市场本身固有的特征。是什么意思？

From an economic point of view, promote the use of building energy-saving technologies are the main problems facing the problem of economic externalities. Externalities are inherent in building energy-saving features of the market.

From an economic standpoint, the building energy-efficient technology dissemination and application of the main problems facing the outside of the economy. Outside of energy conservation in buildings is inherent characteristic of markets themselves.

From the perspective of economics, the construction energy conservation technology promotion application faces the main question is the economical exterior question.The outside nature is the construction conserves energy the market itself inherent characteristic.

From an economic point of view, the main problems of popularization and application of building energy saving technology is an economic externality problem. Externalities are inherent characteristics of the building energy-saving market.

正在翻译，请等待...