准坐标

12-1 心连心

Heart to Heart Li Feiyan: For most of the readers of English Salon , Heart to Heart International is still an unfamiliar name. Could you introduce the nature and guiding principle of your organization

发表于:2018-12-05 / 阅读(140) / 评论(0)

英语沙龙2004全年合辑下

数学英语 29 What are 1D, 2D, and 3D Coordinates?

by Jason Marshall Theres been a lot of talk about 2D versus 3D in the television and movie industries lately. But what exactly does one, two, and three-dimensionality really meanboth in the everyday world and in math? Well, prepare to have your curio

发表于:2018-12-07 / 阅读(39) / 评论(0)

数学英语

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2012--New Texas Institute Coordinates Space Medicine Research

New Texas Institute Coordinates Space Medicine Research Since the human space flight adventure began more than 50 years ago, scientists have learned a lot about things like the effects of weightlessness on bones and muscles, and the danger of increas

发表于:2019-01-13 / 阅读(60) / 评论(0)

VOA标准英语2012年(四月)

中国将完成减排目标

The report, titled China's Response to Climate Change Policy and Action in 2015 is an assessment of the steps that have been taken to both reduce emissions and clean up the air in the country. Among the achievements laid-out in the analysis, the gove

发表于:2019-02-19 / 阅读(44) / 评论(0)

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aluminium electrolysis

aluminium-covered steel wire