import monitoring meaning in Chinese

进口监管

In recent years , radio technology has developed very quickly in our country . however , a radio monitoring receiver with broad frequency scale ( 20 - 3000 mhz ) , high scanning rate ( above 1ghz / s ) and whole spectrum real - time display has not developed . some imported monitoring receivers with broad frequency scale can only scan slowly and could n ' t meet actual needs . not only these imported receivers " price is high but also those developed countries usually limit the quantities of imported receivers and related technology is not open
近年来我国无线电技术水平已经有了很大发展和进步，但对于频率覆盖范围宽( 20 - 3000mhz ) 、扫描速度快( 1ghz / s以上)并具备快速全频段实时频谱显示和记录的无线电监测接收设备，目前我国尚不能生产，国内现在已经进口的宽频段监测接收机一般也只能进行低速扫描，无法满足实际的需要。