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digital TV
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digital TV
Encyclopedia
理学
数字电视
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digital television;digital TV
数字电视
从制作到发射、传输、接收的所有环节都使用数字信号的电视系统。其将传统的模拟电视信号经过抽样、量化转换为数字信号,然后在数字信号的基础上进行各种处理、传输、存储和记录,也可以用电子计算机进行处理、存储和控制。采用数字技术不仅使各种电视设备获得比原有模拟设备更高的性能,而且还具有模拟技术不能实现的新功能,使电视技术步入崭新时代。
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River Nanxi Scenic and Historic Area
river network
river observation
river pattern
river prawn
river pusher barges
river reach
river regime
river regime chart
river regulation or channel improvement
river regulation planning
river regulation structure
river restoration project
river revetment right
rivers and lakes census in China
rivers and lakes health assessment
rivers and lakes survey
river sand-mining planning
Rivers and Mountains by Wang Hui
riverscape
river sediment
river sediment measurement and grain-size analysis instrument
river sediment microbes
river sediment simulation
Riverside
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