The propagation at low altitudes and the ADC noise in the RF direct sampling system taken are considered,and the main factors which affect the coverage of low altitude detection is analyzed.是什么意思_The propagation at low altitudes and the ADC noise in the RF direct sampling system taken are considered,and the main factors which affect the coverage of low altitude detection is analyzed.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句