单词：tetramines
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Marcos Mcpeek Villatoro : My father worked in the coal mines of Kentucky. It was his last job before he retired. After a life moving from one mechanic's shop job to another, this was a real job, said the friend who offered it to him. Sure, it was ri
2009年NPR美国国家公共电台7月
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
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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
医务英语
BEIJING, Feb. 25 (Xinhua) -- China's safety watchdog said Monday it will no longer approve new coal mines that do not meet production capacity requirements in 2013 in order to ensure work safety. High-gas coal mines with an annual production of less
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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
万物简史
BEIJING, Nov. 24 (Xinhua) -- China's workplace safety authorities on Saturday required tougher standards on reopening coal mines in production suspension in the wake of a deadly coal mine accident. Some coal mines were ordered to suspend production d
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