All solid-state transponders are under development with output power level lower by some 20-30 dB in the 4-6GHz band.是什么意思_All solid-state transponders are under development with output power level lower by some 20-30 dB in the 4-6GHz band.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句