发表于:2019-01-03 / 阅读(42) / 评论(0) 分类 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) 分类 电信英语

Analog - Transmitting information that is characterized by continuously variable quantities (such as with AM or FM). This is different from digital transmission, which is characterized by discrete bit

发表于:2019-01-03 / 阅读(65) / 评论(0) 分类 电信英语

By Craig McCulloch Vancouver 13 May 2006 In February of 2009 all television stations in the United States are required to convert to digital transmission. This move will bring an end to traditional an

发表于:2019-01-04 / 阅读(76) / 评论(0) 分类 2006年VOA标准英语(五月)

Hi, Im Becky Worley and this is Good Stuff. Its flu season and were more vigilant than ever about all the flues that are making around, when your kids are sick, you take their temperature, but thats easier said than done. The words Rattle thermometer

发表于:2019-01-06 / 阅读(73) / 评论(0) 分类 英语杂谈

Promoting connectivity and cooperation in informational communication between China and Africa is high on the agenda of this year's FOCAC Beijing Summit. The collaboration is being pushed greatly by a free digital television project of China in rural

发表于:2019-01-19 / 阅读(70) / 评论(0) 分类 2018CRI中国国际广播电台