单词:power spectrum density
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The World’s Top Ten Destinations 1 Ankor Wat is part of a vast network of around a hundred ancient temples hidden deep in the Cambodian 1) jungle. A thousand years ago, this was a 2) thriving wooden
The wolves thus addressed the sheep-dogs [00:02.38]Why should you, (1)-{who are like us in so many things [00:06.11]not be entirely of one mind with us [00:09.33](2)-{and live with us as brothers should [00:11.78]We differ from you in one point only.
[00:03.89]deed deem deep deepen [00:08.76]n.(已完成的)行为, vt.认为,相信 a.深的,深刻的 v.变深,变浓 [00:13.64]deeply deer defeat defect [00:18.26]ad.深深地 n.鹿 v./n.挫败,战胜n.失败 n.缺陷,缺点 [00:22.88]de
A supermassive black hole is quite simply gravity gone mad. An object of such concentrated matter its gravitational pull is insatiable. Nothing can escape it, not even light itself. Anything that gets
[00:11]Day 27 [00:13]democratic [00:14]E-mail is a convenient, [00:16]highly democratic informal medium [00:19]for conveying messages that [00:21]conforms well to human needs. [00:25]density [00:26]The population density is about 500 people per squar
Where Do Rainbows Come From? Throughout history, rainbows have been a source of mystery and legend. Rainbows are also important symbols in a number of cultures around the world. In the Old Testament o
Where Do Rainbows Come From? 彩虹来自何方 Throughout history, rainbows have been a source of mystery and legend. Rainbows are also important symbols in a number of cultures around the world. In the Old Testament of the Bible, for example, God s
Why Dwarf Galaxies Lack Star Power In a study in the journal Nature, researchers show that the relative lack of star density in dwarf galaxies need not conflict with standard cosmological models if you include the blast effects of supernovae. Karen H
Some call it the hormone of love. Its oxytocin and it helps moms bond with and breast-feed their babies, and even keeps romantic couples content. Now a study suggests that this same hormone might also help people with autismby improving their social
New Book Examines the Power of Young Introverts 新书探讨内向青少年的力量 Speak up! Put yourself out there! American society generally places high value on being friendly and speaking freely. That can can worry introverts. Introverts are p
Chicagos Argonne Lab Developing Battery of the Future CHICAGO In 2012, the Department of Energys Office of Science awarded a $120 million grant to a new technology center focused on battery development - headquartered at Argonne National Laboratory i
By Deborah Block Washington, DC 05 December 2006 watch Nobel Prize Science Winners On Sunday, (December 10, 2006) this year's Nobel Prizes are being presented in Stockholm, Sweden. The annual awards are given to people who have made outstanding cont
Only 9 percent of people in China live in an environment that meets the national air quality standards, according to a scientific journal article. 根据一篇科学期刊文章表示,只有9%的中国人生活在符合国家空气质量标准的环
BEIJING, Jan. 29 (Xinhua) -- China's meteorological authority has introduced a new weather warning system for smog which will use readings of PM 2.5, a particle pollutant. The announcement comes as thick haze chokes many cities. The National Meteorol
Air quality in 271 out of 338 prefecture-level or above citiesfailed to meet national standards on the Chinese New Year Eveto 6 am the next morning on Feb 8, primarily because ofpollution caused by firecrackers. 除夕至8日清晨6时期间,在全国
Chinese telecommunications giant Huawei launched its new Nexus 6P smartphone in Spain on Tuesday. 中国电信巨头华为于本周二在西班牙正式发布新版旗舰智能手机Nexus 6P。 The phone, which was unveiled in October, will be availa
Times Higher Education (THE) last Wednesday reveals its BRICS And Emerging Economies University Rankings 2017. 《泰晤士报高等教育》(THE)于上周三公布了2017年《金砖国家和新兴经济体大学排名》。 China's institutions
The proportion of hazardous metal toxins in PM2.5 in Beijing has decreased for the past three years, which experts lauded as the initial achievement of the city's anti-smog measures. 过去三年,北京市PM2.5中对人体有害的金属毒素的比重
21. Eliminating problems by transferring the blame to others is often called scape-goating. 21. 用怪罪别人的办法来解决问题通常被称为寻找替罪羊。 22. The chief foods eaten in an