This article briefly states the structure characteristic of the cable, the problems and solutions that might be faced with during the construction in or around the ports. Especially, it emphasizes the importance of details in the construction, and also give a general description to the features of the three transportation medium.%本文简述了光缆的结构特点及在港口内外进行光缆施工时所面对的问题和解决办法,特别强调了施工细节的重要性,并对三类传输媒质的特点进行了简单的描述,供有关专业人员、施工人员参考和借鉴.
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