优雅波边革菌

Worms seem like strange animals to send to the International Space Station. It's not like astronauts are going to take time off to go fishing and need to bait their hooks. So why send worms? Believe it or not, scientists are using a microscopic worm,

发表于:2018-12-07 / 阅读(142) / 评论(0) 分类 大千世界

P Paeoniflorin 芍药甙 Paeonol 丹皮酚 Palmatine 巴马丁(掌叶防已碱) Papaverine 罂粟碱 Pariphyllin 蚤休甙 Passion flower P.E 西番莲提取物 Patchoulicalcohol 广藿香醇 Peda

发表于:2019-01-03 / 阅读(97) / 评论(0) 分类 医务英语

SCIENCE IN THE NEWS - October 22, 2002: Nobel Science Prizes By George Grow VOICE ONE: This is Steve Ember. VOICE TWO: And this is Bob Doughty with SCIENCE IN THE NEWS, a VOA Special English program a

发表于:2019-01-04 / 阅读(170) / 评论(0) 分类 科技之光

Evan Gant使声波可视,给我们展示了cymatics的科技性和艺术性。cymatics不仅可以分析复杂的声波,例如海豚的声音,还可以创造复杂而漂亮的设计。

发表于:2019-01-05 / 阅读(74) / 评论(0) 分类 TED公开课:头脑游戏

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. When we think about how to represent sound visually, most of us probably picture those volume-dependent sine waves. But thats not how John Stuart Reid

发表于:2019-01-08 / 阅读(90) / 评论(0) 分类 Scientific American(一)月

Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! Thank you!

发表于:2019-02-05 / 阅读(83) / 评论(0) 分类 能源行业英语

Omega Pharma-Quick Step grabs world team title THE HAGUE, Sept. 16 (Xinhua) -- Belgian cycling team Omega Pharma-Quick Step rode to victory in the men's team time trial at the road World Championships in Limburg, the Netherlands on Sunday. The team,

发表于:2019-02-06 / 阅读(102) / 评论(0) 分类 英语新闻
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