... 高层建筑 Highrise Building 主干光缆 Fibre Optic Backbone 集中安装 光分路器 Centralised Optic Splitter ...
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fibre optic backbone
光纤主干
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The second is that BT has already done this in fact, when they laid the first sets of fibre optic backbone.
FORBES: British Telecom's Copper Cable is Worth More Than British Telecom
Although Enron made markets in it, fibre-optic backbone is not really a fungible commodity.
ECONOMIST: From bad to worse | The
The name reflects the fact that radio links are used to connect homes to a traditional fibre-optic backbone.
BBC: sky shot
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