单词：vapo(u)r compression heat pump
单词：vapo(u)r compression heat pump 相关文章
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今天要学的一个词是：pump。pump，Pump一般是指泵，或抽水机。可是今天讲的pump是指汽车加油站的泵。英国石油公司宣布停止在阿拉斯加的石油开采，《洛杉矶时报》的标题说：Oilfield Closure t
英语每日一词
New data show that when bystanders without emergency medical training try CPR using only chest compression, the results can be better than if they also attempt mouth-to-mouth. Christopher Intagliata reports 看见身边有人突然倒了， 想救人家
60秒科学
1849 、 静摩擦 staticfriction 1850 、 颈轴承 journalbearing 1851 、 颈缩 necking 1852 、 频带宽度 bandwidth 1853 、 频率 frequency 1854 、 头座 headstock 1855 、 阈值；临界值
英文名句短语
[00:24.89]Unit 1 The summer holidays [00:29.15]Lesson 1 Dialoges [00:33.59]1 Two students meet for the first time at the beginning of term. [00:40.15]Bill: Hello.I'm Bill.What's your name? Harry: Harry. [00:46.11]Bill: Which school were you at last y
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FAITH LAPIDUS: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Faith Lapidus. CHRISTOPHER CRUISE: And I'm Christopher Cruise. Winter has brought cold weather to many areas in Earths northern hemisphere. With the cold comes a danger as old as
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1.Computer-Aided Manufacturing(CAM) 计算机辅助制造 A: Is CAM used in China? B: Yes，it has been uesd in China for almost twenty years. A：在中国有使用CAM的吗？ B：有啊，在中国使用已经将近20年了。 2.Hot working 热加工 A: What are the hot working proc
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D type Channel Bank A D type channel bank is channel termination equipment used for combining (multiplexing) individual analog channel signals on a time division basis. D type channel banks provide in
电信英语
By Melinda Smith Washington 28 March 2008 Last month we told you about a young woman in the United States who got an experimental heart pump to help keep her alive. VOA's Melinda Smith has an update on her remarkable story.
VOA标准英语2008年（三月）
The World Health Organization says heart disease kills about 17 million people every year and that it will become the leading cause of death in developing countries. But now, there is some hope. A new device is being marketed that could save countles
VOA标准英语2010年(一月)
Life-saving Heart Pump Developed for Children Sixteen-year-old Marco Murguia can now play basketball and live a normal life. But in early 2007, when he was ten, his mother, Connie Murguia, noticed he was acting sluggish and took him to Texas Children
VOA标准英语2012年(八月)
Study finds chest compressions are the real life-saver Art Chimes | St. Louis, Missouri 29 July 2010 Cardiopulmonary resuscitation, or CPR, has been around in its modern form for about 50 years. Its rhythms of chest compressions and mouth-to-mouth br
VOA标准英语2010年(七)月
'Horseheads' dip into the earth to make their owners a few bucks Ted Landphair | Washington, DC 31 March 2010 If you wonder why pumpjacks are sometimes called horseheads, stick a couple of ears and paint an eye on each side of this one, and you'll se
VOA标准英语2010年(四)月
今天我们要学的词是heat。 大家都知道heat是高温的意思，那么不难想象，引伸一下，heat也可以理解为压力。还有两个多星期，美国2008年总统大选的初选就要拉开帷幕了。 Democratic leading candid
英语每日一词
He was going to ride his bike down to South Ferry. He squeezed the tires. They were soft. They needed air. I should buy a pump one of these days, he thought. He rode his bike to K-Mart on 34th Street. He walked the bike inside the store. He went to t
英文短篇故事（纽约）
今天要学的一个词是：pump。pump，Pump一般是指泵，或抽水机。可是今天讲的pump是指汽车加油站的泵。英国石油公司宣布停止在阿拉斯加的石油开采，《洛杉矶时报》的标题说：Oilfield Closure t
英语单词荟萃
The blue bike was sitting in Owens living room. It had no kickstand, so he had wedged the front tire in between two bookshelves so that the bike would stand upright. Both tires were flat. Dust covered the bike. However, no household spiders had set u
365个英语简短小故事
November 10 11月10日 Read it! 读读看！ Taylor needs gas for her car. 泰乐的车子需要加油， She can go to the gas station on June Street. 她可以去六月街的加油站， Can Taylor pay cash there? 泰乐在那里可以付现金吗？
大家说英语
今天要学的一个词是：pump。pump，Pump一般是指泵，或抽水机。可是今天讲的pump是指汽车加油站的泵。英国石油公司宣布停止在阿拉斯加的石油开采，《洛杉矶时报》的标题说：Oilfield Closure t
学个词
If you visit upland areas of Britain places like the mountains of Scotland, or Wales, or the Pennine Hills in northern England you will see a lot of sheep. Many of the sheep are in places where there are no walls or hedges to keep them in their field
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