文章从市场需求、技术经济特点、系统与传输光纤的现状等几个方面分析城域WDM技术。

This paper analyzed the metro WDM technique in terms of market demand, technical and economical characteristics and current status of system and transmission fiber.

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工程项目风险是由工程项目的技术经济特点决定的，加强项目风险管理有利于顺利实现项目目标。

Technical and economical characteristics decide the risks in engineering projects, it's easy to achieve project goals through risk management.

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然后结合我国建筑企业自身的技术经济特点，丰富了我国建筑企业集成化供应链的概念和运作模式。

Then, the concept and operating model about integration supply chain management of construction enterprise is brought forward, considering the enterprise's characteristics in technique and economy.

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