太阳辐射衰减

45.The source of Energy A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun; in fact, at the Suns very center. It is here that is to be found the source of the energy that the Sun constantly pours out i

发表于:2018-11-28 / 阅读(388) / 评论(0) 分类 新概念优美背诵短文50篇

诸多线索综合起来为我们描绘出一幅画面:那是火星遥远的过去,那时的火星还有着一层厚厚的大气层,令这颗星球温热暖和,从而使水能够在火星表面流淌。但如今,地表的水消失不见,而

发表于:2018-12-07 / 阅读(133) / 评论(0) 分类 60秒科学

A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun; in fact, at the Sun's very center. It is here that is to be found the source of the energy that the Sun constantly pours out into space as light and h

发表于:2018-12-12 / 阅读(139) / 评论(0) 分类 英语小短文

A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun; in fact, at the Sun's very center. It is here that is to be found the source of the energy that the

发表于:2018-12-15 / 阅读(220) / 评论(0) 分类 新东方背诵文选

A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun; in fact, at the Sun's very center. It is here that is to be found the source of the energy that the Sun constantly pours out into space as light and h

发表于:2018-12-30 / 阅读(105) / 评论(0) 分类 考研背诵50篇

Transmission Facilities Transmission facilities provide the communication paths that carry user and network control information between nodes in a network. In general, transmission facilities consist

发表于:2019-01-03 / 阅读(118) / 评论(0) 分类 电信英语

I-MAC isonchronous media access controller IDN integrated digital network IEC International Electrotechnical Commission Impairments Impairments is the (e.g., transmission channel and signal impairment

发表于:2019-01-03 / 阅读(108) / 评论(0) 分类 电信英语

AT Command - This is the character

发表于:2019-01-03 / 阅读(128) / 评论(0) 分类 电信英语

This is Scientific Americans 60-Second Science. Im Steve Mirsky. got a minute? Earth-like planets have the potential to form around manyand perhaps mostof the nearest stars that are like our sun. Michael Meyer of the University of Arizona announced t

发表于:2019-01-08 / 阅读(139) / 评论(0) 分类 Scientific American(二)月

The clues are adding up to give a picture of a distant Martian past, when the planet had a thick atmosphere that was warm enough for water to stream on the surface. But now the waters gone, and the atmosphere is so thin that any water would boil away

发表于:2019-01-08 / 阅读(125) / 评论(0) 分类 Scientific American(十)月

The source of Energy A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun; in fact, at the Sun's very center. It is here that is to be found the source of the energy that the Sun constantly pours out into

发表于:2019-01-08 / 阅读(186) / 评论(0) 分类 英语小短文

Halfway there, you bump into the Asteroid Belt. It is not like in the movies where you are dodging asteroids at every second. It is a The space is very big and the asteroids are a long distance apart, so you could travel through it quite safely. The

发表于:2019-01-08 / 阅读(110) / 评论(0) 分类 自然百科2012年

True, he had not the qualities of social humor or wit, but he was an example of indefatigable industry. 实际上,他天生没有幽默感,也不会说俏皮话,可他是这一行业不辞辛苦劳作的典范。 He came to his studies every mo

发表于:2019-01-10 / 阅读(207) / 评论(0) 分类 美国语文第六册

AS IT IS 2013-06-14 NASA Scientists Still Dream of, and Plan for, Human Travel to Mars From VOA Learning English, this is As It Is. Welcome back. Im Caty Weaver. On the show today, we look into the future of space exploration. The American space agen

发表于:2019-01-12 / 阅读(95) / 评论(0) 分类 2013年VOA慢速英语(六)月

Juno Spacecraft Enters Jupiter Orbit 朱诺号探测器进入木星轨道 American scientists cheered loudly as their spacecraft, called Juno, entered Jupiters orbit Monday night. Juno, welcome to Jupiter! The scientists are with the U.S. space agenc

发表于:2019-01-12 / 阅读(82) / 评论(0) 分类 2016年VOA慢速英语(七)月

The solar system is a hostile place. Earth is under attack from deadly cosmic radiation. Life here is only possible, because it's protected by the magnetosphere, an invisible force field that cocoons the planet. But new evidence reveals that this vit

发表于:2019-01-22 / 阅读(113) / 评论(0) 分类 自然百科2011年

In polar regions where the magnetic field is / weakest, auroras glow in the sky. These dazzling displays of colored lights form when solar particles slam into gases in our atmosphere causing them to glow. The stronger the solar wind, the more dramati

发表于:2019-01-22 / 阅读(120) / 评论(0) 分类 自然百科2011年

1 ASTRONOMY 天文 astronomy 天文学 astronomical 天文的 astronomical observatory 天文台 astronomer 天文学家 astrophysics 天文物理学 astrology 占星学 pseudoscience 伪科学 cosmos(universe) 宇宙 cosmology 宇宙学 infinite 无限

发表于:2019-02-13 / 阅读(101) / 评论(0) 分类 实用英语

From VOA Learning English, this is As It Is. Welcome back. Im Caty Weaver. On the show today, we look into the future of space exploration. The American space agency NASA has announced plans for a new effort to study the sun. And, NASA scientists are

发表于:2019-02-16 / 阅读(105) / 评论(0) 分类 英语语言学习

The Source of Energy A summary of the physical and chemical nature of life must begin, not on the Earth, but in the Sun; in fact, at the Sun's very center. It is here that is to be found the source of the energy that the Sun constantly pours out into

发表于:2019-02-25 / 阅读(115) / 评论(0) 分类 双语有声阅读
学英语单词
amphiprion ocellaris
angle of delivity
antianxiety drug
Asia-Pacific Broadcasting Union
ausonium
Bahceli
barber's sign
bone conduction hearing aid
bradytachycardia
Bāghain
cabine
carry a contract
Chama, R.
characteristic peak
Chloradion
collack
Congo Cone
cost accounting by departments
cybersphere
D-port
data update rate
deemanate
diplachne serotina link var. chinensis maxim.
dysentery (dysenteria)
erythroclastic
Eumalacostraca
Evercreech
feed-water sparger
fraises des bois
fungated
go codes
Godard
growing area
halster
have none of
head and stern anchoring
heavy-ion source
hooeys
impoliter
industrial floor brick
interswitching
ketene
Klerka, Mys
Lange, David Russell
ligg. interspinalia
main movement
malaise-Anglaise
malnormality
maternity nurse
mesprise
micro-adjustment
Mifulu
military uniform
miscellaneous dangerous substance
Mogadishan
money purchase scheme
monthly agrometeorological bulletin
multi stage amplification
nonshopping
optically pumping
overtoe
palaverer
perithecium
Pharr
photoelectric colormeter
phytotelmata
Pitot tube
plate joint
pocket Excel
polka jacket
prebiologic
profitvolume
prospective current
punching bags
Pym
recycle design
Reigate
reverse differential resistance
sambucinin
Seilbahn
sexualizes
Stein-Leventhal(syndrome)
store sth up
swap arbitrage
tailing pond
tectus
the classification
tool breakage
trabecular
tragedic
train-tube
transracial marriage
tricarballylic
trolley wire
us navies
valle
washer-dryer, washer-drier
water meter
wet flashover voltage
whyne
Winksele
xrs