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This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? Whether it's for streaming Netflix or sharing files, we're gobbling up more and more dataand we want it faster. But even shooting data with lasers over fiber-o

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One of these wavelengths corresponds to hydrogen, another wavelength would be iron. Another wavelength would be oxygen. And so you go to the part of the spectrum you are interested in and you see you'

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DAMA - Stands for Demand-Assigned Multiple Access. This is a way to instantaneously assign telephony channels in a transponder according to the immediate traffic demands. Dash - This is the the charac

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Delay - This is the wait time between to specific events, and regarding satellite communications, it is the time it takes for a signal to go from the transmission station up to orbit and through the s

电信专业英汉词典d1

digital revolution 数 字 革 命 digit 数 字 (码 位 )， 数 位 digital economy 数 字 经 济 digital earth 数 字 地 球 digital subsistene 数 字 化 生 存 digital museum 数 字 博 物

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WAN wide area network WARC World Administrative Radio Consortium WATS Wide-area telecommunications services. See Wide-area telecommunications services. Waveform amplitude (magnitude) versus time repre

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Fade - This is a reduction in the received signal. It is caused by absorption, refraction, or reflection. Fax - This is a shortening of Facsimile, and it refers to one fax machine sending a digital re

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D type Channel Bank A D type channel bank is channel termination equipment used for combining (multiplexing) individual analog channel signals on a time division basis. D type channel banks provide in

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The Apple Watch grabbed most of the headlines when it launched on March 9. But for the scientific community, the companys new research kit product is probably the more interesting development. Researcher kit lets scientists more easily write apps for

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Language Points My phone's dead. My phone died. bad/poor reception I've got bad reception here. I'm losing you data，I'm out of data. MB读作megs，GB读作gigs，I have 5 per month. My phone keeps dropping calls. no signal I've got no signal/recep