拉普拉斯双曲[型]方程

[00:02.70]Unit 20 New Frontiers [00:06.15]Lesson 3 Scientific Breakthroughs [00:10.11]PIONEERS OF SCIENCE [00:12.16]In the summer of 1905, [00:14.40]a young man was sitting at home [00:15.97]after a day's work. [00:18.04]While rocking his one-year-ol

发表于:2018-12-13 / 阅读(129) / 评论(0) 分类 北师大版高中英语模块7(选修)

You Do the Math Hello and welcome to Words and Their Stories from VOA Learning English. On this program we explain how to use common expressions in American English. We also explore the origins of these expressions. Where do they come from? Today we

发表于:2018-12-16 / 阅读(109) / 评论(0) 分类 2016年VOA慢速英语(十)月

引言: 他一旦停止成长,他一旦对自己说我该懂的都懂了,这个时候他的青春也就完了。他可能在25岁时死去,也可能在75岁时死去,这都没有区别。就在那一天,他开始变老。 I dread to come

发表于:2019-01-02 / 阅读(85) / 评论(0) 分类 精美英文欣赏

分集介绍:指数,log,对数微分;双曲函数 Exponential.and.log.Logarithmic.differentiation;.hyperbolic.functions

发表于:2019-01-05 / 阅读(332) / 评论(0) 分类 麻省理工学院公开课:单变量微积分

[0:0]entertain招待,款待 [0:11.2108]entertainment enthusiasm entitle entry娱乐,文娱节目 热情,热心 给...权利,给...资格 参赛的人 [1:7.0247]environment envy equality equation环境,周围状况 忌妒,羡慕 相等,相同 议程,等式 [1:59.5258]equivalent era erect err

发表于:2019-01-16 / 阅读(170) / 评论(0) 分类 闭着眼睛飘单词 四级词汇

I dread to come to the end of the year,said a friend to me recently, it makes me realize I am growing old. William James, the great psychologist, said that most men are old fogies at twenty-five,He was right. Most men at twenty-five are satisfied wit

发表于:2019-02-06 / 阅读(65) / 评论(0) 分类 阅读空间