单词：radar altimeter and Doppler velocity sensor
单词：radar altimeter and Doppler velocity sensor 相关文章
play pause stop mute unmute max volume 00:0002:36repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update your Flash plugin. The mayor of Amatrice, which is located in central Italy
CNN美国有线新闻2016年8月
Scientists Deliberate Cleaning Space Junk WASHINGTON Everything that we launch into an orbit around the earth eventually becomes space debris. Scientists say the increasing number of unusable objects circling our planet is threatening functioning sat
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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Real-time information about whats happening in our bodies at the cellular level could be crucial for fighting cancer and other life-threatening conditi
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Very roomy. For a single-seat fighter it's spacious. Plenty of room to lay out stuff we carry with us. The nose is cut and you won't see any perpendicular surfaces go around. The four probes in the front are not machine guns. And they are not hologra
国家地理2007年
Broadcast: Feb 01, 2003 The U.S. Space Shuttle Columbia broke apart in mid-air Saturday minutes before it was to return to Earth. The U.S. space agency, 1) NASA, says none of the seven astronauts aboa
VOA2003（上）-科技先知
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. It's April 15th. Like many people around the country, you might be feeling your blood pressure rise as you deal with everyone's favorite activityfiling
Scientific American(四)月
AS IT IS 2013-08-19 Survival Shelters, Tornadoes and Old Ironsides 生存避难所,龙卷风和老铁壁 Hello, and welcome to the Monday edition of As It Is, our daily show for people learning everyday American English. 大家好，欢迎大家收听周
2013年VOA慢速英语(八)月
AS IT IS 2013-09-11 Rising Temperatures Could Mean More Wildfires 不断上升的气温可能会意味着更多的森林大火 From VOA Learning English, welcome to As It Is! Im Mario Ritter. On our show today, we hear from two weather experts. We he
2013年VOA慢速英语(九)月
By Al Pessin Washington 28 September 2006 US Air Force Gen. Kevin Chilton The head of the U.S. Air Force Space Command says he is working to improve the military's sensor system to ensure that no one can threaten crucial space-based assets. The comm
2006年VOA标准英语（九月）
Warm Ocean Accelerating Antarctic Ice Loss The study is the first comprehensive survey of all the Antarctic ice shelves, which are the 1.5 million square kilometers that fringe much of the frozen continent. Lead author Eric Rignot, a professor at the
VOA标准英语2013年(六月)
EcoVelocity is an outdoor car show with a difference. This eco-conscious motor show celebrates all things green. High-performance vehicles at this year's EcoVelocity show in London prove that electric vehicles can look great and deliver blisteringand
世界各地新闻集锦
There's no doubt that a stream of giant bubbles could theoretically have sunk the U.S.S.'Cyclops'. Whether the bubbles were there or not, that's not for us to say. But I'll leave that up to the oceanographers. But could methane gas also explain the d
自然百科2010年
Science and Technology Forest conservation Lidartector 科技 森林保护 激光雷达探测术 How to tell if countries are cheating on their conservation commitments 如何判断一个国家在森林保护承诺上是否有舞弊行为 IN AN isola
经济学人科技系列
生活大爆炸第一季第六集_1：The Middle Earth Paradigm -Rajesh: Okay, if no one else will say I will. We really suck at paintball. 好吧，如果没人说那就我来说。我们在彩弹比赛中的表现实在太差了！ -Howard: That wa
生活大爆炸第一季
JERUSALEM, May 8 (Xinhua) -- Israeli researcher Jacob (Koby) Scheuer, from the Tel Aviv University (TAU) School of Electrical Engineering, has developed a nano-scale gyroscope, the Ha'aretz daily reported Sunday. Scheuer developed a new optic-fiber n
英语新闻
Halo works because of several factors 由于下降速度快 High downward velocity and minimal metal and forward air speed, 金属赘物少 气流速度快 which all serve to defeat the radar.Wow! Just amazing! 高跳低开术可以避开多数的雷达
荒野求生
Doppler on Wheels Rolls Into Tornados Doppler radar reads the weather based on reflections from items moving through the air. Joshua Wurman was the first to put the technology on wheels and drive it directly into the path of a tornado. I invented Dop
VOA常速英语2013年(八月)
But measuring movement is actually pretty tricky. Any small mistake in the measured acceleration results in position errors that grow with time. So even if youre standing still and just rocking in place, a navigation computer relying solely on the IM
英语时差8，16
But measuring movement is actually pretty tricky. Any small mistake in the measured acceleration results in position errors that grow with time. So even if youre standing still and just rocking in place, a navigation computer relying solely on the IM
英语时差8，16