The Substrate meterial is domestic RT-Duroid 5880.The mixers with IF amplifier have the DSB noise figure of 5.0dB and 5.3dB respectively.是什么意思_The Substrate meterial is domestic RT-Duroid 5880.The mixers with IF amplifier have the DSB noise figure of 5.0dB and 5.3dB respectively.在线翻译_英语_读音_用法_例句