单词:hydraulic analogy water channel
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This is the VOA Special English Economics Report. Many people think the search for cleaner energy leads only to renewable resources like sun, wind and water. But it also leads to a fossil fuel. Natural gas is considered the cleanest of the fossil fu
Experts See Closer Link Between Earthquakes and Oil Drilling 专家称地震和石油钻探关系密切 Since 2009, earthquake activity has greatly increased in the central and eastern United States. A new report from U.S. earthquake experts links dr
US Army Corps of Engineers Fights Receding Mississippi Waters It's another day of intense heat in the midwest United States, and another day without rain on the Mississippi river. On board the U.S. Army Corps of Engineers survey ship, the MV Pathfind
密西西比河水位下降威胁航运 The Mississippi River is the longest and most economically important waterway in the United States. But a lack of rainfall is reducing the depth of the river. The U.S. Army Corps of Engineers is surveying the r
石油开采废水变宝 The increased use of horizontal drilling and hydraulic fracturing, to extract natural gas and oil in many parts of the United States, has dramatically increased the nation's energy supply, but also raised concerns about such
Natural gas could be used for energy. One of the ways that companies get it is called hydraulic fracturing or fracking. It's one engineer's use water and chemicals to crack open rocks deep underground. And that will release those natural gases. There
模仿文本:Fracking or hydraulic fracturing is either the best new way to get much needed energy to the human race, or it's a dangerous industry which contaminates water and can even cause earthquakes, according to which can we believe. We're goi
Scripts: We were invited to open up a store there. We did very well. And then all of a sudden it was reported by a local blogger that perhaps we were being disrespectful of the history and culture of China. And I think for us as soon as that occured
What is fracking? It is a way of getting gas or oil from inside rock, deep underground. Mining companies break the rock using water. This week, the Commissioner for the Environment gave a report on fracking in New Zealand. She said that the mining co
彭博商业周刊:如果全世界都能够使用页岩气,我们的清洁天然气供应量能够增加百分之四十七,既降低温室气体排放,也可降低能源价格. 清洁能源来之不易 If all the world's theoretically recoverable sha
This is Scientific Americans' 60-Second Science. I'm Chelsea Wald. Got a minute? Vinaigrette dressing: when you shake it little vinegar droplets scatter through the oil, but when you put it down, the droplets merge and the dressing separates. That's
Black, Foamy Water Worries Fracking Neighbors There is a lot of construction near Janet McIntyre's home in southwestern Pennsylvania. It's not new houses, but new industry: 10 gas wells, a compressor station and multiple drilling-waste ponds. The sta
Study: No Evidence Hydraulic Fracturing Pollutes Water A new study finds no evidence that the controversial practice to extract natural gas known as hydraulic fracturing is contaminating ground water. The report, Separating Fact from Fiction in Shale
Fracking Could Lead to Big Profits for Some Companies A machine, developed by a company called OriginOil, removes sludge from water that came from an oil drilling site - with a process originally developed for extracting algae. Petroleum is nothing b
Environmental Prize Winner Opposes Fracking 环境奖得主反对水力压裂技术 WASHINGTON This years North American Goldman Environmental Prize winner used legal means to ban hydraulic fracturing in parts of central New York state. Fracking, as
Harnessing Ocean Wave Power Provides Cheap Electricity 利用海洋波浪提供廉价电力和饮用水 WASHINGTON An often overlooked renewable energy resource is the power of ocean waves. Scientists in California say harnessing energy from the regu
By Amy Katz Washington, DC 10 February 2006 watch Firefighting report Wildfires are again burning in the Western U.S. state of California. There is concern that the high temperatures and high winds wi
Science and Technology Flood defences Dambusterbusters 科技 防洪减灾 堤坝除险,以水御水 Some clever, new ways of stopping rivers flooding 防止河水泛滥的绝妙新方法 THE destruction of New Orleans by Hurricane Katrina in 2005
Without my noticing it? 我怎么一点都不觉得? Without your noticing it. And if you aren't crushed by so much pressure, it's because the air penetrates the interior of your body with equal pressure. 您一点不觉得。您所以不被这样大
Science and technology 科学技术 Flood defences 防洪减灾 Dambusterbusters 堤坝除险,以水御水 Some clever, new ways of stopping rivers flooding 防止河水泛滥的绝妙新方法 THE destruction of New Orleans by Hurricane Katrina in