TDD systems in the discussion at the same time to consider FDD (frequency division duplex) system, TDD / FDD in the dual-mode, LTE has provided technical norms and standards of commonality.是什么意思_TDD systems in the discussion at the same time to consider FDD (frequency division duplex) system, TDD / FDD in the dual-mode, LTE has provided technical norms and standards of commonality.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句