雙向光傳輸 bidirectional transmission: 雙向傳輸bidirectional optical cable: 雙向光纜bidirectional optical demultiplexer: 雙向光多路解復(fù)用器bidirectional optical fiber: 雙向光纖bidirectional optical multiplexer: 雙向光多路復(fù)用器下載手機(jī)詞典可隨時(shí)隨地查詞查翻譯