digital video frequency system 数字视频系统
digital video frequency making 数字视频制作
Digital wireless transmit video frequency for max-range 87 kilometers.
最大距离达到87公里数字化无线传输音视频；
The digital portion includes low-frequency video, the pulses that keep receivers synchronized with transmitters, and the audio signal for high-quality stereo sound.
数字部分包括低频视频(使接收机与发射机保持同步的脉冲)以及用于高质量立体声的音频信号。
Conventional digital video acquisition card can only collect but not process video frequency.
传统的数字视频采集卡通常只具备视频采集功能，而不具备视频处理功能。
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