单词:line-stabilized oscillator
单词:line-stabilized oscillator 相关文章
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This is Scientific Americans 60-Second Science. Im Christopher Intagliata. Got a minute? Rivers today have high muddy banks, sandbars and bends. But they didnt always look that way because it wasnt until the evolution of tree-like plants, some 330 mi
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
This is Scientific American's 60-Second Science, I'm Christie Nicholson. Got a minute? During the last ice age our problem was too little carbon. Unlike today where too much carbon is causing global warming. Past glacial ages occurred partly because
The Senate has confirmed the nomination of Sonia Sotomayor to the US Supreme Court. NPR's Audie Cornish reports. Minnesota Senator Al Franken read the tallies at the end of the confirmation vote. On this vote, the yeas are 68 and the nays are 31. Th
BEIJING, Oct. 10 (Xinhuanet) -- Actress Zsa Zsa Gabor was rushed again to the hospital in Los Angeles to reattach a feeding tube to her stomach Sunday, her publicist said. The 94-year-old actress was taken from her home to UCLA Ronald Reagan Medical
And I was shocked and shaken to the core. 我震惊不已, 吓得不得了。 And I went through this roller coaster, because after they stabilized her, she went to the intensive care unit, and I hoped against hope that she would recover. 之后我的
HARI SREENIVASAN: A newly released report by the Southern Education Foundation says a majority of all public school students across the United States come from low-income families. Experts say that could have important implications for the nation. Fo
拉丁美洲仍是最不平等,最不安全的地区 UNITED NATIONS, Nov. 12 (Xinhua) -- Latin America remained the most unequal and most insecure region in the world, said a UN report released Tuesday, calling for efforts to reduce insecurity thro
President Barack Obama says congressional leaders from both political parties need to do the right thing and work with him to achieve the largest possible compromise to cut deficit spending and raise the national debt limit. Mr. Obama used a news con
U.S. officials say cooler weather and recent rain showers in the drought-stricken Midwest have largely stabilized crop conditions, but add that the drought is not over. The U.S. Agriculture Department said in a statement Tuesday that rainfall has bee
BEIJING, April 13 (Xinhua) -- China's economy expanded 8.1 percent year-on-year in the first quarter of 2012, slowing from 8.9 percent in the fourth quarter of last year, the National Bureau of Statistics (NBS) said Friday. The figure, which marked t
A.J.雅各布斯用了整整一年的时间,遵循他听到的每一条健康建议--从用玻璃杯来抹防晒霜到戴着自行车头盔购物。在TEDMED的演讲台上,雅各布斯与大家分享了他在这个过程中发现的许多让人意
Italy's Senate rushed to pass laws that clear the way for establishing a new government in a bid to restore confidence in Europes second-biggest debtor. The new administration may be led by former EU Competition Commissioner Mario Monti, - a man mark
WASHINGTON, Oct. 19 (Xinhua) -- Thanks to a massive(巨大的) and sustained(持久的) policy response, the U.S. economy has continued to recover from the worst recession(衰退,不景气) since the Great Depression, but the recovery rem
The central parity rate of the Chinese currency strengthened 175 basis points on Tuesday, closing at 6.32 to the U.S. dollar. The yuan has stabilized somewhat after a sharp depreciation in August, but remains down 1.8 percent compared to the start of
A number of economists are suggesting inflation here in China may be back under 2-percent. ICBC chief economist Lu Zhengwei is forecasting CPI for January will be at 1.8-percent. This would be down from the 2.5-percent figure in December. In December
President Barack Obama says there is no doubt that the European Unions agreement to slash Greeces debt and enlarge a bailout fund is progress. The president says strong execution of the plan is essential. After meeting Thursday with the Czech Republi
托福阅读高分的关键是在于多看多练,同学们在日常练习中应该重视托福阅读材料的分析。新东方网为大家整理提供托福阅读练习,供各位考生复习参考。 Although only 1 person in 20 in the Colonial