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数学英语 23 What are the Range and Standard Deviation?

by Jason Marshall Weve now talked about three methods for calculating average values: the mean, median, and mode (affectionately known as the three Ms). So, are we done? Is that everything we could ever want to know about interpreting average values?

发表于:2018-12-07 / 阅读(72) / 评论(0)

数学英语

SSS 2011-10-05

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? The 2011 Nobel Prize in chemistry goes to Daniel Schechtman of the TechnionIsrael Institute of Technology in Haifa. Schechtman discovered what are called quasicrystals.

发表于:2019-01-08 / 阅读(72) / 评论(0)

Scientific American(十)月

VOA标准英语2014--Five Patients Given Experimental Ebola Drug Said To Be Improving

Five Patients Given Experimental Ebola Drug Said To Be Improving Without specific drugs or a vaccine for Ebola, the only thing doctors can do for those suffering from this disease is treat their symptoms and hope their bodies can fight the virus. Ebo

发表于:2019-01-14 / 阅读(50) / 评论(0)

VOA标准英语2014年(八月)

学个词 Learn a Word-VOA英语教学 3035 experimental

今天我们要学的词是experimental. Experimental 试验阶段的。The House of Representatives rejected a Republican bill that would give terminally ill patients the ability to try experimental drugs. 美国国会众议院否决了一项议案，

发表于:2019-01-26 / 阅读(44) / 评论(0)

英语单词荟萃

2007年VOA标准英语-Experimental Procedure May Let Injured Player W

By Carol Pearson Washington 13 September 2007 American professional football player Kevin Everett fractured his neck during a game, 9 September 2007. He remains sedated and in intensive care. It is too early to tell if Everett will recover fully. Th

发表于:2019-02-04 / 阅读(85) / 评论(0)

2007年VOA标准英语（九月）

VOA标准英语2010年-New Experimental Drug for Pancreatic C

I never take credit for God's healing in people. - PastorDaniel Negroni Nearly a year ago, Daniel Rocha, a television producer in the Washington area, received a death sentence. He had an aggressive form of pancreatic cancer that was spreading rapidl

发表于:2019-02-07 / 阅读(64) / 评论(0)

VOA标准英语2010年(一月)

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学英语单词

4-Nitrophthalonitrile

atmospheric refraction index

bedim with

Blairmore

bond angle of covalent bond