中值粒径

数学英语 07 How to Calculate Median Values

by Jason Marshall In the last article, we learned that there are several ways to calculate the average value of a sample of data. We focused on one such method, the arithmetic mean, and used it to calculate the average number of potato chips in a bag

发表于:2019-01-02 / 阅读(109) / 评论(0)

数学英语

数学英语 11 How to Use Median Averaging

by Jason Marshall In the last two articles weve learned how to calculate two types of average values: the mean and the median. Today, were going to continue where we left off and talk about how median averaging can be useful in everyday, real life si

发表于:2019-01-02 / 阅读(111) / 评论(0)

数学英语

VOA标准英语2011--Fermilab Scientists Optimistic About Finding Higgs Boson Particle

Fermilab Scientists Optimistic About Finding Higgs Boson Particle Scientists at the CERN laboratory in Geneva, Switzerland say they are encouraged by new data suggesting their Large Hadron Collider, the world's most powerful atom-smasher, is one step

发表于:2019-01-13 / 阅读(62) / 评论(0)

VOA标准英语2011年(十二月)

购物英语对话-Buying a Pan(1)

A: I am looking for a pan. B: No problem. What size would you like? A: A big one would be nice. B: How about this one? It's our biggest16 in diameter. A: Oh, yes. I like that one. But it's too heavy. B: Okay, try this one. It's made of aluminum. A: O

发表于:2019-01-20 / 阅读(93) / 评论(0)

购物英语对话

VOA慢速英语2012 IN THE NEWS - Scientists May Have Found 'God Particle'

IN THE NEWS - Scientists May Have Found 'God Particle' 新闻报道 - 科学家们可能发现了上帝粒子 This is IN THE NEWS in VOA Special English. 这里是美国之音慢速英语新闻报道。 This week, scientists in Switzerland reported a

发表于:2019-02-18 / 阅读(73) / 评论(0)

2012年VOA慢速英语(七)月

今天学学开车吧！

Xavier: Look out! Put your foot on the brake! Xavier：小心！把脚放到刹车上！ Brandy: I am braking. Brandy：我在踩刹车。 Xavier: No, your foot is on the gas pedal! Xavier：没有，你的脚在油门上！ Brandy: Oh. Theres the br

发表于:2019-02-25 / 阅读(86) / 评论(0)

英语口语

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学英语单词

-skirted

12-o-tetradecanoylphorbol-13-acetate

antipathetic symbiosis

artificial magnetizing method

asphalt plank

Aztec gold