telephony passive optical network是什么意思 telephony passive optical network在线中文翻译

telephony passive optical network是什么意思，telephony passive optical network在线翻译，telephony passive optical network中文意思，telephony passive optical network的中文翻译，telephony passive optical network发音，telephony passive optical network例句，telephony passive optical network词组短语，telephony passive optical network怎么翻译，单词telephony passive optical network的意思