单词：carbon-hydrogen-oxygen cycle
单词：carbon-hydrogen-oxygen cycle 相关文章
Water Cycle 水循环 All the oceans on earth are salty, while inland water is typically fresh. How does water become salty? We'll answer a listener's question -- today on Earth and Sky. DB: This is Earth and Sky. We recently visited the Austin Childr
(科普英语)Earth and Sky
Well, that's limelight. What exactly was it? Well it was the burning of calcium oxide in a very intense flame. And when did the job of a limelighter begin? Oh, famously, the first recorded instance in
圣诞特辑
Item eight. Vocabulary. fossil, molecule, hydrogen, carbon, sulfur. Petroleum has been important since ancient times. In Latin, the name means rock oil. Petroleum is a fossil fuel. The liquid comes from the remains of plants and animals that died mil
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Matthew / England speaker I hope not. I hope if they are driving cars they are run on hydrogen or perhaps something else, electricity perhaps, but I really hope we don't use gasoline anymore. Maiko / Japan speaker I do think in 100 years people will
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Fire Cycle 火灾规律 The El Nino phenomenon of 1997-98 unleashed torrential rain in some parts of the world, while creating abnormally dry conditions in others. And it sparked record numbers of wildfires. Learn more about climate and wildfire -- toda
(科普英语)Earth and Sky
Junctional epithelium - the epithelium which seals the base of the gingival sulcus against the tooth. Keratan sulphate - a glycosaminoglycan found in cartilage, with chondroitin sulphate. Keratin - a
医务英语
This is Scientific Americans 60-Second Science. I am Cynthia Graber. This will just take a minute. Solar panels typically convert sunlight into electricity or heat. But photosynthetic vegetation converts sunlight into chemical energy. Now M.I.T.s Dan
Scientific American(八)月
One main goal in the renewable energy field is to find an efficient, inexpensive way to split water into hydrogen and oxygen. The hydrogen could then be used as a fuel source for vehicles or fuel cells. Typically, an electric current breaks the water
Scientific American(四)月
This the VOA Special English Development Report. Picture a bicycle with a two-wheeled carriage in place of a back tire. India has millions of these cycle rickshaws. The operators are called pullers. They ride through the streets pulling passengers a
VOA慢速英语2009年（五）月
BERLIN, April 25 (Xinhua) -- A study recently published in the journal Nature Chemical Biology opens up new avenues in biohydrogen research, the Technical University of Berlin (TU Berlin) said on Friday. Scientists at the TU Berlin succeeded in expla
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The government said that work on the first seven cycle tracks which were promised earlier this year will start in the summer. This will cost $9 million. Another $41 million will be spent later. Together these cycle tracks will be called The Great Rid
新西兰英语
AGRICULTURE REPORT - Compost: an Organic Way to Better Soil and Crops By Gary Garriott Broadcast: Tuesday, July 05, 2005 I'm Gwen Outen with the VOA Special English Agriculture Report. Many farmers im
农业与发展
The U.S. space agency is moving ahead with preparations for Thursday's scheduled launch of the space shuttle(航天飞机) Discovery on its mission to the International Space Station. NASA said it was loading liquid oxygen and liquid hydrogen into th
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大气ATMOSPHERE 大气组成Atmosphericcomposition 空气质量Airquality 大气化学Atmosphericchemistry 大气成分Atmosphericcomponents 大气颗粒物Atmosphericparticulates 二氧化碳Carbondi
英文语法词汇
Time magazine included the Yike Bike in their list of the 50 Best Inventions for 2009. The Yike Bike is an electric bike which folds. It weighs about 9kg and has a battery which charges in about 20 minutes. You sit up straight on a Yike Bike holding
新西兰英语
German Car Manufacturer Audi Creates Fuel From Air And Water 奥迪用空气和水合成新燃料 Creating an alternative green or carbon neutral fuel to replace gasoline has been the holy grail for scientists for many years. However, while there has
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Classical music fans in Beijing are now embracing a massive work-the complete cycle of Beethoven's 9 symphonies with The Deutsche Kammerphilharmonie Bremen. Paavo Jarvi, an internationally famous Estonian conductor, is the artistic director of the or
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Hydrogen and Industries Hydrogen,the lightest and simplest of the elements, has several properties that make it valuable for many industries. It releases more heat per unit of weight than any other fuel.In rocket engines, tons of hydrogen and oxygen
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Altogether there is about twenty thousand times as much carbon locked away in the Earth's rocks as in the atmosphere. 总的来说，被关在地球岩石里的碳，大约相当于大气里的2000倍。 Eventually much of that limestone will end up
万物简史
The web-savvy amongst you will know that just as a mouse is no longer only a rodent, a tweet isn't necessarily a noise made by a bird. Nearly a quarter of the new words added to the latest edition of the Chambers Dictionary come from internet culture
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