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Codec Codec is a contraction of coder and decoder; a device that encodes analog signals into digital signals, for transmission through a network in digital format, and decodes received digital signals

电信专业英英词典H-1

Half Duplex Half duplex is a transmission path capable of transmitting signals in both directions, but only in one direction at a time. HDLC high-level data link control Header The header is control i

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DSP Digital Signal Processor 数字信号处理器 一种以数字信号来处理大量信息的微处理器。 DSP Digital Sound Processor 数字声音处理器 DSP Directory System Protocol 目录系统

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CLI Calling Line Identification 主叫线路识别 CLIP Calling Line Identification Presentation 主叫线路识别显示 CLIR Calling Line Identification Restriction 主叫线路识别限制 CLNS Con

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DHCP Dynamic Host Configuration Protocol 动态主机配置协议 DHCS Database Host and Control System 数据库主机与控制系统 DHN Digital Home Network 数字家庭网 DHTML Dynamic HyperText

SSS 2008-04-14

This is Scientific Americans 60-Second Science, I'm Cynthia Graber. This will just take a minute. In vitro fertilization(试管受精) efforts can be helped by oddly enough oral contraceptives .That's the finding from Tel Aviv University, site of the

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AUDIE CORNISH, HOST: When a toddler gets angry, it's not unusual to see hitting, stomping or biting. That's because of what's happening in the child's brain. It's just beginning to develop the circuits that control impulsive behavior. Now scientists

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