商频恢复电压

VOA慢速英语2018--July 23, 2003: History of Radio

(THEME) VOICE ONE: This is Steve Ember. VOICE TWO: And this is Faith Lapidus with the VOA Special English program EXPLORATIONS. You are listening to our program today on a radio. Almost no communication would exist in the world without the electromag

发表于:2019-01-03 / 阅读(51) / 评论(0)

2018年VOA慢速英语(九)月

电信专业英英词典F-2

Focal Length - Distance from the exact center of the dish to the center of the feed. Focal Point - The physical point in space toward which the satellite reflector dish directs the received signal so

发表于:2019-01-03 / 阅读(68) / 评论(0)

电信英语

EXPLORATIONS - The Story of Radio

EXPLORATIONS - The Story of Radio By Paul Thompson Broadcast: Wednesday, June 01, 2005 (MUSIC) VOICE ONE: This is Steve Ember. VOICE TWO: Satellite technology can broadcast radio anywhere. And this is

发表于:2019-01-07 / 阅读(65) / 评论(0)

Explorations

英语博客-北美风情 19、Vocabulary: Wave

图片1 Hey! Over here! Were over here! We are waving at you so you look over here! This weeks word is wave and all of its different meanings. Listen in and see if you are on the same wavelength as us.

发表于:2019-01-28 / 阅读(45) / 评论(0)

英语博客-北美风情

Wifi信号弱？放置地点有问题

Deciding where to place a Wi-Fi router at home to minimise signal blackspots is a fine art. But a physicist has attempted to tackle the problem by mathematically working out the optimum position for a router. He studied how walls and reflections affe

发表于:2019-02-08 / 阅读(48) / 评论(0)

英语新闻

经济学人219:寻找外星人

Science and technology 科学技术 Searching for aliens 寻找外星人 The wow factor 防止再次意外 A new citizen-science project will improve the chances of finding ET 一个新的平民科学项目可以增大找到地外智慧的机会 EVER

发表于:2019-02-16 / 阅读(48) / 评论(0)

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