单词：list of radio signals
单词：list of radio signals 相关文章
WHITE HOUSE President Donald Trumps administration wants to shut down U.S. government radio stations that announce official time, a service in operation since World War II. WWV and WWVB in the state of Colorado and WWVH on the island of Kauai in the
VOA标准英语2018年(九月)
From a planet.......let me get out of here....stay where you are.... Humanoid aliens have been good business in the 20th century. B moviemakers in particular have found a winning formula in showing se
寻访外星人
Recently, some researchers in Australia were excited about messages from a distant galaxy. But it turns out that the signals were from a completely different source. The scientists at Parkes Observatory in Australia specialize in radio bursts- short
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Is anyone out there? For over 40 years scientists have been searching for extraterrestrial intelligence, but theyve found nothing. Now the new Allen Telescope Array, a string of 350 radio telescopes, is being built 300 miles north of San Francisco a
国家地理2008年
Steve Magellan, world-famous adventurer, has been missing for two days. The man who soared around the world by himself in a balloon took off in a single-engine airplane from a private airport in Nevada. He left at noon for a three-hour flight. The we
365个英语简短小故事
Plant Signals 植物的语言 Can plants smell and taste in the same way that animals do? Can they talk to each other and to insects? Learn how scientists hope to unravel some of the mysteries of plant senses -- on today's Earth and Sky. JB: This is Eart
(科普英语)Earth and Sky
On January 11, Norway became the first country to begin turning off signals from its FM radio network. The Norwegian stations will instead use only digital audio broadcasting, called DAB. FM, or frequency modulation, radio stations have been in opera
2017年VOA慢速英语(一)月
Astronomers: Evidence Found of First Stars Astronomers have observed what they believe is the formation of the universe 13.6 billion years ago, when the earliest stars were just starting to shine. The astronomers say their observations may also have
2018年VOA慢速英语(三)月
Three radio stations in the United States mainly broadcast one thing: the official time. The three are radio stations WWV and WWVB, in the state of Colorado, and WWVH, on the island of Kauai in Hawaii. They send out signals that are used by millions
2018年VOA慢速英语(九)月
By Greg Flakus New Orleans, LA 24 January 2006 watch Radio Food Show report It has been nearly five months since the city of New Orleans was devastated by flooding, following the passage of Hurricane
2006年VOA标准英语（一月）
By Jessica Berman Washington 28 May 2008 Monkeys have successfully operated robotic arms to feed themselves with human-like precision, activating a mechanical device with signals from their brain. Researchers say the technique could eventually be use
VOA标准英语2008年（五月）
This morning Lady Gaga is making no apologies in her new song Do what you want just released over night. And on Twitter in the last 24 hours the pop diva has launched 4 assaults against the critics .In tweet after tweet she highlighted the headline t
访谈录2013年
Antenna 天线 An antenna is used for radio, television, radar and so on. 天线用于广播、电视、雷达等等。 It works in air and under the water. 它适用于空中和水下。 Antennas send signals and receive signals. 天线发送和接收
与美国小学生一起学英文第4册
By Cathy Majtenyi Nairobi 21 March 2007 The National Union of Somali Journalists is calling for Somalia's transitional government to train its armed forces not to violate media freedom. The call followed a national conference on media freedom and the
2007年VOA标准英语（三月）
Ok, imagine you are at the beach, in order to figure out if there are fish in the ocean, you dip an empty glass into the water and look inside. No fish in the glass? Well, there must be no fish in the ocean. Not too logical, is it? But that's exactly
自然百科2008年
Judy: I've called this meeting so we can brainstorm some fundraising ideas. As you know, we're in danger of closing. Any thoughts? Stan: I thought that Juan was working on getting donors. Judy: He is, but we can't count on that coming through. Domini
地道美语播客
Relief Radio Station Signals Dire State of Communications in Tacloban, Philippines TACLOBAN, PHILIPPINES All of Taclobans 15 radio stations were knocked off the air when Typhoon Haiyan devastated the Philippine city of 220,000 people. A response with
VOA常速英语2013年(十一月)
Science and technology 科学技术 Low-cost radar 低成本雷达 A programme worth watching 值得一看的节目 How air-traffic control can use television signals to plot aircraft 空中交通管制局如何利用电视信号找出飞行器位置？
经济学人科技系列
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
英语新闻
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
经济学人科技系列