Optical fiber transmission has also become the major means of communication, particularly in the trunk communication network.
光纤传输也已成为当前通信，特别是干线通信的主要手段。
Optical fiber transmission has also become the major means of communication, particularly in the trunk communication network.
光纤传输也已成为当前通信，特别是干线通信的主要手段。
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