It is well known that the optical fiber has the maximum bandwidth in all transmitting medium used in the network communications.
在网络通信的信息传递材料中，光纤被公认为是现今通信带宽最大的传输介质。
Optical fiber plays a key role in modern communications network, especially in large-capacity data communications.
光纤是现代通信网络的骨干，尤其是在大容量数据通信中。
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