单词:tetrafluoromonosilane
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This is Scientific American Sixty Seconds Science, I'm Sophie Bushwick, got a minute? When Mexican tetra fish moved into darker caves long ago, they evolved to deal with the dark by becoming albino and going blind. A new research shows that the chang
T Tanshinone IIA 丹参酮IIA Tanshinone I 丹参酮I Tanshinone IIB 丹参酮IIB Taraxasterol 蒲公英甾醇 Taraxerol 蒲公英赛醇 Tauro ursodesoxy cholic acid 牛磺熊去氧胆酸 Taxifolin 花旗
By Shally Zomorodi Los Angeles, CA 01 February 2007 watch Mozane report The two members of the pop duo Mozane have been working together for just five years, but have known each other for their entire lives. VOA's Shally Zomorodi reports the group's
The U.S. Embassy in Addis Ababa has issued a heightened security alert a day after Ethiopia's government warned of an imminent terrorist attack. VOA's Peter Heinlein in the Ethiopian capital reports the alert coincides with a government roundup of e
By Alisha Ryu Nairobi 15 August 2007 Police in Ethiopia say they have prevented a rebel group called the Oromo Liberation Front from carrying out a plan to bomb public buildings and assassinate officials in the Ethiopian city of Nazareth. VOA Corresp
10 Getting The Lead Out 第十章 把铅撵出去 In the late 1940s, a graduate student at the University of Chicago named Clair Patterson (who was, first name notwithstanding, an Iowa farm boy by origin) was using a new method of lead isotope measur