单词:digital switching devices
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EXPLORATIONS - International Consumer Electronics Show Presents Latest Technology and Products from 2,500 CompaniesBy Dana Demange Broadcast: Wednesday, January 25, 2006 (MUSIC) VOICE ONE: I'm Pat Bod
Channel A channel is a single communications path in a transmission medium connecting two or more points in a network, each path being separated by some means; e.g., spatial or multiplex separation, s
DSB Direct Satellite Broadcast 直接卫星广播 DSB Double SideBand 双边带 DSBRC Double SideBand Reduced Carrier 双边带减幅载波 DSBSC Double SideBand Suppressed Carrier 双边带抑制载波
AS much as we love our digital devices, many of us have an uneasy sense that they are destroying our attention spans. We skitter from app to app, seldom alighting for long. Our ability to concentrate is shot, right? 我们喜爱我们的数码设备,
There are over 285 million visually impaired people in the world, and some of these lives are about to get a lot better. 世界上有超过2亿8千5百万视觉受损人群,然而,他们中一些人的生活品质即将大有改善。 South Korea