The emerging of intelligent automatic switching optical network is a major historical breakthrough in the concept of transmission network.
智能自动交换光网络的出现是传送网概念的重大历史性突破。
The emerging of intelligent automatic switching optical network is a major historical breakthrough in the concept of transmission network.
智能自动交换光网络的出现是传送网概念的重大历史性突破。
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