固定的，准静止的，似稳的

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

办公室英语口语第82期:Ordering more stationary 再订办

Ordering more stationary A: Okay, then, Mary. We need 10 more loose-leaf binders, five pounds of heavy duty white paper, and what else did I say? B: Two boxes of transparencies for the over-head machines. A: Right. And Id like one of those new electr

发表于:2018-12-25 / 阅读(56) / 评论(0)

办公室英语口语

出国旅游口语一本通第66期:In a Stationary Store

第66期:In a Stationary Store Y:I'd like to see that pen,please. Y:我想看一看那支笔。 X:You mean fihis one? X:您说这支吗? Y:No，the other one in the brown case. Y:不是，是棕色盒子的那一支。 X:Oh，this one.Here. X:哦，这

发表于:2018-12-26 / 阅读(91) / 评论(0)

出国旅游口语一本通

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

波兰银行推出“移动”ATM机

In an age of contactless cards and paying with your smartphone, the idea of getting cash out of an ATM machine may seem a little dated. 在这个非接触式智能卡和智能手机付款盛行的时代，去ATM机取钱显得有点过时。 But now

发表于:2019-02-07 / 阅读(71) / 评论(0)

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中国学生逆天发明自行车洗衣机二合一

Students at the Dalian Nationalities University in China have designed a bike washing machine that will wash your clothes while you pedal. The invention is aptly called Bike Washing Machine or BiWa, and it aims to bring health and convenience to our

发表于:2019-02-18 / 阅读(49) / 评论(0)

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5-bergapten

adaptive-control models