单词：bloch oscillator
单词：bloch oscillator 相关文章
841 、 埋头铆钉 countersinkheadrivet 842 、 埋头锥孔 countersink 843 、 埋头螺栓 countersinkheadbolt 844 、 埋头螺丝 countersinkheadscrew 845 、 埋头钻 countersinkdrill 846 、
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The Senate is on the verge of approving a massive housing bill aimed at helping homeowners facing foreclosure. NPR's Brian Naylor has more. The bill would provide homeowners who can no longer afford to make their monthly payments a chance to qualify
2008年NPR美国国家公共电台七月
Scientists: Monkeys Used Raft to Cross Ocean 科学家:猴子用木筏横渡海洋 Scientists found seven monkey teeth that became fossils in an area near the Panama Canal. The teeth were more than five million years old. Scientists think that is whe
2016年VOA慢速英语(五)月
Democratic presidential candidate Barack Obama's planned trip to the Middle East drew faint praise today from his Re:publican rival John McCain. Sarah Hulett of Michigan Radio reports. Senator McCain told an audience at a General Motors facility in
2008年NPR美国国家公共电台七月
Keeping Time With Quartz Most people know that wrist watches commonly contain quartz. In fact, if you wear a watch, chances are its a quartz watch, since most watches is made today use quartz. But, you may not know what quartz has to do with keeping
英语听力文摘 English Digest
JEFFREY BROWN:And next, we continue our series on the big changes in energy production in the U.S. In previous stories, Ray Suarez has looked at the impact of oil production on some boomtowns and how a demand for natural gas is changing the business
PBS访谈环境系列
Could Rising Temperatures Mean Smaller Mammals? Scientists say in the ancient past, higher temperatures meant smaller mammals. Theyre studying how a brief, but dramatic climate change event affected body size. Its called the Paleocene-Eocene Thermal
VOA标准英语2012年(二月)
SCOTT SIMON, HOST: For young people growing up east of the Anacostia River in Washington, D.C., life can be a struggle against gangs and violence. And for much of its modern history, the river itself has been under assault, considered one of the most
2017年NPR美国国家公共电台5月
By Barbara Schoetzau New York 12 July 2006 The world's most expensive painting is now on exhibit in New York's Neue Galerie. The head of the small museum purchased the exotic Gustav Klimt painting less than one month ago for what experts say is a re
2006年VOA标准英语（七月）
AMERICAN MOSAIC - The Story of How a 1907 Painting by Klimt Just Sold for a Record $135 MillionBy Dana Demange, Sarah Randle and Nancy Stienbach Broadcast: Thu, 6 Jul 2006 16:00:00 UTC HOST: Welcome t
2006年慢速英语（七）月