音标:[ˈpaʊɚ ˈdɛnsɪti ˈspɛktrəm] ;
频谱

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

发表于:2018-12-07 / 阅读(344) / 评论(0) 分类 超大质量黑洞

Air interface tailored to minimize current consumption Basic Technical Information—Based upon a small, high performance integrated radio transceiver, each of which is allocated a unique 48-bit addre

发表于:2018-12-08 / 阅读(78) / 评论(0) 分类 新概念英语第一册Flash第2版

Hong Kong was the staging point for a conference described as Asia's first transhumanism event, in late 2011. 2011年底,香港举办了据说是亚洲第一个超人类主义(transhumanism)活动。 (Note: don't bother to check the English-Chi

发表于:2018-12-12 / 阅读(67) / 评论(0) 分类 实用英语

This is Scientific American's 60-Second Science. I'm Steve Mirsky. This will just take a minute. Pregnant women shouldn't drink. It's become gospel, because of the danger of fetal alcohol spectrum disorder. Alcohol can disturb the normal development

发表于:2018-12-24 / 阅读(137) / 评论(0) 分类 Scientific American(三)月

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

发表于:2018-12-31 / 阅读(113) / 评论(0) 分类 有声英文阅读

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

发表于:2019-01-02 / 阅读(57) / 评论(0) 分类 双语有声阅读

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

发表于:2019-01-02 / 阅读(101) / 评论(0) 分类 60秒科学

Angela Merkel, who has steered Germany through several global crises as its first female leader, said last Sunday that she will seek a fourth term as chancellor in general elections next year. 安吉拉默克尔上周日宣称,将在明年举行的大

发表于:2019-01-07 / 阅读(309) / 评论(0) 分类 英语新闻

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

发表于:2019-01-08 / 阅读(94) / 评论(0) 分类 Scientific American(二)月

新技术:开灯就有无线宽带 Bulbs could soon be used to broadcast household broadband 英国爱丁堡大学的一位教授研究出了一项新技术,能够让普通的电灯泡作为无线网络信号传输器,只要开灯,就能无线上

发表于:2019-01-08 / 阅读(146) / 评论(0) 分类 轻松英语

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

发表于:2019-01-12 / 阅读(82) / 评论(0) 分类 2016年VOA慢速英语(六)月

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

发表于:2019-01-14 / 阅读(63) / 评论(0) 分类 VOA标准英语2014年(七月)

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

发表于:2019-01-25 / 阅读(147) / 评论(0) 分类 2006年VOA标准英语(十二月)

Science and Technolgy. 科技。 Visible-light communication. 可见光通信。 Tripping the light fantastic. 与光共舞。 A fast and cheap optical version of Wi-Fi is coming. 一个高速而廉价的光学Wi-Fi即将问世。 AMONG the many new

发表于:2019-01-26 / 阅读(137) / 评论(0) 分类 经济学人科技系列

Chinese scientists have announced a gravitational wave research plan they're dubbing Taiji. The Chinese Academy of Sciences says their research plans will be finalized later this year. Academy member Wu Yueliang says their research will focus on low

发表于:2019-02-02 / 阅读(99) / 评论(0) 分类 英语新闻

Science and technology 科学技术 Visible-light communication 可见光通信 Tripping the light fantastic 与光共舞 A fast and cheap optical version of Wi-Fi is coming 一个高速而廉价的光学Wi-Fi即将问世 AMONG the many new gadgets u

发表于:2019-02-06 / 阅读(93) / 评论(0) 分类 经济学人科技系列

Malaria killed 435,000 people last year, most of them in Africa. 去年435,000人死于疟疾,其中大部分在非洲。 The parasite that causes the illness is carried by females of some, but not all, species of mosquitoes of the genus Anopheles.

发表于:2019-02-16 / 阅读(89) / 评论(0) 分类 经济学人科技系列

Its Time to Change Your Life Too often we come home after a long day at work and open the takeout food, then plop down on the couch and watch TV until its time for bed. The next day, we do the same thing again. While I have been known to indulge in t

发表于:2019-02-18 / 阅读(57) / 评论(0) 分类 阅读空间

Ally Kerr是来自苏格兰的Indie pop乐队(也是主唱的名字),融合了苏格兰传统民谣和清新独立流 行风格,旋律悦耳而淳朴。 如此清新系的男声一向是小编的大爱,每每听到这样的声音就觉得生活

发表于:2019-02-18 / 阅读(96) / 评论(0) 分类 好听的英文歌曲

Glossary for Telecomunications This glossary helps explain some of the acronyms and technical phrases Bluetooth A short-range wireless technology designed to allow connection of portable devices in a wire-free manner. For example connection of a wire

发表于:2019-02-18 / 阅读(101) / 评论(0) 分类 实用英语
学英语单词
'ukulele (hawaii)
addition and betterment reserve
al-zawahri
all-savers certificate
ampulla ductus lacrimalis
angular gap
Aotearoan
apartheiding
Argyrotaenia
B-service area
barophilic baceria
batz
bed-sitting-rooms
bipupillate
bromethylene
buoy-to-buoy time
business warning indicator
butyl glycidyl ether
capital grant cycle
carcinids
cataclesis
chordae urachi
ciche
cocoonase
coincidence (muller 1916)
cryolithozone
cursillo
cybernation economics
daily surplus production
daphniphyllum oblongum chien
dead melt
degeneration four-wave mixing
die stamping press
diphenol
documentably
energy reflection build-up factor
engraver's proof
Erlenmeyer
experiment with clay model
extent map
familial trait
fibrous peat
fissurae horizontalis cerebelli
fixed negatively charged exchange site
flurouracil
genus pediculuss
high-velocities
horel
hydro-electric engineering
index thermometer
insertion model
insipidity
integral-dose
irsogladine
jejunoduodenostomy
Jodzhl
lathe frame
main practice
manganese-steel frog
mateers
mauron
melon seed chocolate
mineral caoutchouc
mushroom-picker's lung
nesting indirect command file
norpinanyl
nuclear periodicity
optical acoustic diffraction
PDEA
phenacaine
PHOLIDICHTHYIDAE
phonetic input method
procurement regulation
relexifying
relief/safety valve
remanufacturer
retinulate
sacral artery
sacroparasitus
salties
seeder cloud
sock it to
solvent washer
spherical-earth attenuation
Ste-Croix-Volvestre
subrepitant
super video compact disc
Swinging Sixties
Thallo
Thilaven
ThinWire
to dog
trade promotion division
tryptophyl
Tummo, Jab.
user submitted batch job
vaporizability
variable gain amplifier
Vila Nova da Armada
webbie
well-counterfeited
zoster nuchae