典型的城市公用事业通过管道网络传输系统，从生产地向特定的消费点提供混合商品。
Typical urban public utilities provide mix goods from productive spots to specific consumers through pipeline network transmission system.
无线音频传输系统，接收器，视频摄像机和音频混合器。
Wireless audio transmission system, receiver, video recorder and audio mixer.
主要使用DS、FH或二者混合通信体制，其核心为信息传输系统，可综合采用多种通信手段。
DS, FH or mixing communication system is used in wireless network attack, information transmitted system is used as kernel unit, and many communication means is synthetically used.
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