Metro WDM compact instrument is generally used for base station environment. External interference signal affects its normal work through the signal line or shell.
紧凑型城域波分仪一般用于电信环境，外界干扰信号容易通过信号线或外壳耦合到紧凑型城域波分仪，影响其正常工作。
This paper analyzed the metro WDM technique in terms of market demand, technical and economical characteristics and current status of system and transmission fiber.
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。
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