分集介绍:这一讲介绍非线性的情况,主要是通过轻微阻尼的非线性摆的例子,介绍了该情况下如何求临界点,并作轨迹草图。简谐振动中,摆使用的是小角近似为线性情况,这一讲是一个推

发表于:2018-12-09 / 阅读(66) / 评论(0) 分类 麻省理工学院公开课:微分方程

分集介绍:这一讲的主题是极限环,首先教授给出了极限环的定义,它首先是方程组的解形成的一条闭合轨迹,另外它不同于一般闭合轨迹,它必须是附近轨迹在t趋于无穷时逼近的轨迹。然后

发表于:2018-12-09 / 阅读(51) / 评论(0) 分类 麻省理工学院公开课:微分方程

So what happens when amyloid plaques accumulate to this tipping point? 所以当淀粉样斑块积累到临界点后会发生什么? Our microglia janitor cells become hyper-activated, releasing chemicals that cause inflammation and cellular damage

发表于:2018-12-18 / 阅读(72) / 评论(0) 分类 TED演讲国际问题篇

英文歌词: I broke into your house last night And left a note at your bedside I'm far too shy to speak to you at school You leave me numb and I don't know why I find it easier to sit and stare Than push my limbs out towards you right My heart is bur

发表于:2019-01-16 / 阅读(53) / 评论(0) 分类 英文摇滚歌曲

How many people here are 40 years old or older? You're afraid to admit it now. 在座的有多少人已经四十多岁了?你不想承认了吗? This initial step into the disease, this presence of amyloid plaques accumulating, can already be fou

发表于:2019-01-18 / 阅读(49) / 评论(0) 分类 TED演讲国际问题篇

The amount of debris orbiting the Earth has reached a tipping point for collisions, which would in turn generate more of the debris that threatens astronauts and satellites, according to a US study released on Thursday。 NASA needs a new strategic p

发表于:2019-01-30 / 阅读(66) / 评论(0) 分类 实用英语

英文歌词: Is there a place I can go Is there a light to get me there If I've forgotten what to say It's because all words are dust If this is really what you think How come you won't look me in the eye All this crying in your sleep As I lie awake b

发表于:2019-02-04 / 阅读(50) / 评论(0) 分类 英文摇滚歌曲

今天我们要学的词是tipping point。 Tipping point, 是指变化一触即发的临界点。 Experts warned that a bankruptcy of one of Detroit's Big Three could create a 'tipping point' that will bring the entire industry to a halt, 专家警告

发表于:2019-02-05 / 阅读(64) / 评论(0) 分类 英语单词荟萃

今天我们要学的词是tipping point。 Tipping point, 是指变化一触即发的临界点。 Experts warned that a bankruptcy of one of Detroit's Big Three could create a 'tipping point' that will bring the entire industry to a halt, 专家警告

发表于:2019-02-05 / 阅读(52) / 评论(0) 分类 英语每日一词

英语高手背单词经验分享 1 不要背书 大部分人背书都是背了后面忘了前面,正襟危坐几个小时,其实记住的单词没几个,为什么?因为人的瞬时记忆力只能记忆5-7个东西,比如你妈妈叫你去买

发表于:2019-02-09 / 阅读(49) / 评论(0) 分类 英语学习方法

考研英语 http://www.kuakao.com/pub/english/单词在考研 http://www.kuakao.com/英语中的基础性地位是无可撼动的,因此单词记忆对于考研英语的重要性也就可想而知。所以,我们在复习的过程中,一定要攻

发表于:2019-02-25 / 阅读(74) / 评论(0) 分类 考研英语