然而，直到最近几年，这项技术才迅速地从书本和实验室研究中走出，在现代通信系统中得到了实际的应用。
However, in recent years this technique has quickly moved out of textbooks and research laboratories and into practice in modern communications systems.
然而，直到最近几年，这项技术才迅速地从书本和实验室研究中走出，在现代通信系统中得到了实际的应用。
However, in recent years this technique has quickly moved out of textbooks and research laboratories and into practice in modern communications systems.
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