[网络] 四氢糠胺;氢化糠胺

A new and sharply critical book about Donald Trumps first year in office went on sale Friday, four days earlier than planned. Michael Wolffs Fire and Fury: Inside the Trump White House describes a chaotic White House, a president who was not prepared

发表于:2018-12-08 / 阅读(24) / 评论(0) 分类 2018年VOA慢速英语(一)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

发表于:2018-12-24 / 阅读(71) / 评论(0) 分类 Scientific American(一)月

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

发表于:2019-01-03 / 阅读(61) / 评论(0) 分类 医务英语

By Noel King Khartoum 15 February 2007 Amid growing concern over continued violence in Sudan's Darfur region, top United Nations and African Union envoys to the region said Thursday they remain optimistic that a political solution to the crisis can b

发表于:2019-01-12 / 阅读(87) / 评论(0) 分类 2007年VOA标准英语(二月)

Locals in Uganda are lauding a construction project financed by China which is creating the East African country's largest hydroelectric power plant. The 600-megawatt (MW) Karuma Hydroelectric Power Plant is located at the mid-western district of Kir

发表于:2019-01-19 / 阅读(95) / 评论(0) 分类 2018CRI中国国际广播电台

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

发表于:2019-02-17 / 阅读(71) / 评论(0) 分类 万物简史