... multi-destination carrier 多元载波 Multi-carrier signals 多载波信号 multi-carrier technology 多载波技术 ...
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multi-carrier signals
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以上为机器翻译结果，长、整句建议使用 人工翻译 。
The snag is that multi-carrier signals do not travel as far as single-carrier ones, so they require the construction of expensive repeater stations.
ECONOMIST: Power-line technology
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