n. 拟充分性

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(155) / 评论(0) 分类 数学英语

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(218) / 评论(0) 分类 Scientific American(十)月

巴西2015年可能重拾自给自足的石油产量 RIO DE JANEIRO, Feb. 26 (Xinhua) -- Brazil may regain its self-sufficiency in oil production in 2015, Brazilian oil giant Petrobras CEO, Maria das Gracas Foster, said on Wednesday. Foster told a pr

发表于:2019-02-03 / 阅读(105) / 评论(0) 分类 英语新闻
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