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Multimode Optical Fiber(S) Multimode fibers, with much wider cores than single mode fibers, allow light to enter at various angles, and reflect (bounce off of) core-clad boundaries as electromagnetic
发表于:2019-01-03 / 阅读(60) / 评论(0)
电信英语
Frame In time division multiplexing systems, Frame is a sequence of time slots each containing a sample from one of the channels carried by the system. The frame is repeated at regular intervals, (nor
发表于:2019-01-03 / 阅读(42) / 评论(0)
电信英语
第一篇作文(无论是书信或图表)评分标准由四个方面组成。第一个是Task Achievement(任务完成),第二个是Coherence and Cohesion(内容连贯与篇章衔接),第三个是 Lexical Resource(词汇资源),第四个是 Gra
发表于:2019-03-13 / 阅读(129) / 评论(0)
雅思英语