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临时入境的无线电发射设备应按照海关相关管理规定按时复运出境。
Temporarily imported radio transmission equipment shall be shipped out according to the related laws and regulations of the customs.
频谱监测是频谱管理的基础，是测量无线电发射的基本参数，进而对整个电磁环境有整体的把握。
Monitor is the foundation of management, which measure the basic parameter of radio transmit. The whole electromagnetism environment was realized in the end.
多普勒无线电测向技术即为利用多普勒效应测定无线电发射设备与接收设备之间夹角的一种技术。
Doppler radio Direction Finder is a technology that measures the Angle between radio transmitter and the radio using Doppler effect (Doppler principle).
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