By means of GIS method, the digital elevation model(DEM)is established, the flow direction, flow accumulation, subcatchment boundaries and stream network spatial distribution are studied.
采用GIS的方法，建立了环县数字高程模型（DEM），研究了本区地表水流方向、集流能力、子集水区的划分及水系网络空间分布等水文特征。
With the universalization of the digital devices and network, digital family technique is becoming the main-stream of modern digital technique.
随着数字设备和网络的普及，数字家庭技术正日益成为现代数字的主流技术。
And the streaming server also has IPTV STB (set-top box) function to receive video-audio digital stream from network and play the video-audio digital stream after decoding.
该流服务器还具有IPTV机顶盒的功能，从网络上接收视音数字流解码后在电视机上播放。
IP camera is a kind of camera that can product and transmit digital video stream via lineate or wireless network, but there is a few of cases of it's application in China.
网络摄像机是一种可产生数字视频流并将视频流通过有线或无线网络进行传输的摄像机，但在中国还应用较少。
IP camera is a kind of camera that can product and transmit digital video stream via lineate or wireless network, but there is a few of cases of it's application in China.
网络摄像机是一种可产生数字视频流并将视频流通过有线或无线网络进行传输的摄像机，但在中国还应用较少。
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