单词：power amplification device
单词：power amplification device 相关文章
AMERICAN MOSAIC - Is the Segway the Answer to City Traffic and Pollution?By Dana Demange and Nancy Steinbach Broadcast: Friday, August 11, 2006 HOST: Welcome to AMERICAN MOSAIC, in VOA Special English
2006年慢速英语（八）月
EXPLORATIONS -February 6, 2002: Increasing Hubble’s Power By Paul Thompson VOICE ONE: This is Steve Ember. VOICE TWO: And this is Bob Doughty with the VOA Special English program EXPLORATIONS. Today
Explorations
[00:05.20]Nikola Tesla developed the alternating current power system that provides electricity in the United States. [00:14.42]Many of his other discoveries led to electronic inventions for which other scientists were honored. [00:22.75]Mister Tesla
美国英语听力80篇
Look at how lovely these things are. 看看这些东西是多么可爱 I mean, even when they're off 我是说即使不使用它们 they're beautiful to hold. 拿在手里都觉得漂亮 In their design,Jobs' went for simplicity above all else. 在他们
名人传记
Pre-Listening Vocabulary switch: move to a different position Wi-Fi: a wireless network that provides Internet connection Bluetooth: a trademarked name for a short-range wireless connection for computerized devices GPS: global positioning system, a s
趣谈英语
Device Keeps Internet On When Power Goes Off 断电仍可进行网络连接的设备 BERLIN A team of Americans and Kenyans has developed a new Internet router - and it's creating buzz. That's because it is an affordable, reliable solution for people
VOA常速英语2013年(九月)
SCIENCE REPORT – January 31, 2002: Hubble Improvements By Paul Thompson 1993 service flight This is the VOA Special English Science Report. American space agency astronauts will soon replace much of
科技之光
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Last month the journal Science reported that a Swedish company was planning on using the body heat generated by commuters in a Stockholm train station to
Scientific American(二)月
SCIENCE IN THE NEWS - Device Gives New Meaning to the Idea of Power Walking Also: A common disease many people have never heard of. And scientists say people with blue eyes are genetically related. Transcript of radio broadcast: 10 March 2008 VOICE
VOA慢速英语2008年（三）月
Plant Your Mobile Charger in the Dirt 智利学生研发植物充电设备--花草也可做电源 Three university students in Santiago, Chile have developed a plant-powered device to charge their mobile phones. 在智利首都圣地亚哥, 3名智利大
2016年VOA慢速英语(一)月
Which Apps Drain Your Phones Battery? 哪些应用程序耗尽你的手机电池？ Does your mobile phones battery die more quickly than it once did? Apps may be the problem. Even if you did not add new apps to your phone, an app update alone can us
2016年VOA慢速英语(四)月
AS IT IS 2015-10-06 Beach Mat Charges Mobile Phone 黎巴嫩小伙开发能为手机充电的沙滩垫 Some people do not like being separated from their telephone, even while enjoying a restful holiday at the beach. So, a university student from Leb
2015年VOA慢速英语(十)月
The study of a solar-powered blood pressure monitor finds it can be an effective tool in places where electricity and even batteries can be in short supply. A study in Africa found the monitors to be affordable and accurate. High blood pressure is a
VOA标准英语2010年(十一)月
Device Keeps Internet On When Power Goes Off Erik Hersman and his team in Nairobi have created what they say is the first router made especially for Africa. It's battery powered and rugged. And it's gaining attention in Europe and the United States.
VOA标准英语2013年(五月)
美国研究人员尝试从微风中获取能源 Solar chargers are effective only when the sunlight is relatively strong,but researchers at the Construction Engineering Research Laboratory in Illinois turned to the wind as another natural source of
VOA标准英语2015年(十二月)
Voice 1 Hello. Im Marina Santee. Voice 2 And Im Mike Procter. Welcome to Spotlight. This programme uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. Voice 1 In todays program
环球英语 Spotlight
Solar power 太阳能 The third way 第三种方法 A new method of making electricity from sunlight has just been tested 一种从太阳光得到能源的新方法正在尝试 AT THE moment, there are two reliable ways to make electricity from sunli
经济学人综合
BERLIN A team of Americans and Kenyans has developed a new Internet router - and it's creating buzz. That's because it is an affordable, reliable solution for people without consistent Internet access. It can run while plugged in or on battery power,
英语新闻
The movement of finger swipes may soon be able to charge our cellphones. 手指滑动的动作可能很快就可以为我们的手机充电了。 Researchers at Michigan State University have created a new way to harvest energy from human motion, usi
英语新闻