The stock launching system is a macroscopical concept which entails specific launching system, method, price fixing method as well as a series of internal and external marketing environment.

股票发行机制是一个宏观的范畴，不仅指具体的发行制度、发行方式、定价方法，还包括一系列的内外部市场环境。

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Then this papers analysis the internal and external market environment of AC airlines with modern marketing theory based on the status of air transport market and AC airlines.

然后立足我国航空运输市场的现状和AC航空公司的实际情况，将现代营销理论同实践相结合，深入分析了AC航空公司客运市场的内外环境。

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