un. 准双曲轨道

by Jason Marshall Weve now talked about three methods for calculating average values: the mean, median, and mode (affectionately known as the three Ms). So, are we done? Is that everything we could ever want to know about interpreting average values?

发表于:2018-12-07 / 阅读(199) / 评论(0) 分类 数学英语

AS IT IS 2016-10-18 Supermoon Photos Around the World 世界各地拍摄到的超级月亮 This is Whats Trending Today. Something called a supermoon rose at night on October 15 and 16. That is when the moon is full, closer to Earth than usual, and l

发表于:2018-12-08 / 阅读(202) / 评论(0) 分类 2016年VOA慢速英语(十)月

Idiom: Move heaven and earth 经历千辛万苦做成某事 Hit the books: 1. space station 空间站 2. soil 土壤 3. astronaut 宇航员 4. orbit 轨道,围绕进行旋转 5. unreliable 不可靠的 6. laptop 手提电脑,笔记本电脑 7. ch

发表于:2018-12-27 / 阅读(149) / 评论(0) 分类 趣味青春英语

IN THE NEWS - Pluto and Dark Matter Both Star in a Busy Week for AstronomersBy Brianna Blake Broadcast: Saturday, August 26, 2006 This is IN THE NEWS in VOA Special English. Pluto compared to other so

发表于:2019-01-02 / 阅读(138) / 评论(0) 分类 2006年慢速英语(八)月

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(473) / 评论(0) 分类 麻省理工学院公开课:单变量微积分

Space Crew to Enjoy Thanksgiving Feast in Orbit The three crew members on the International Space Station plan to have their own Thanksgiving feast on Thursday as they orbit 352 kilometers above the earth. The lone American on board plans to share so

发表于:2019-01-06 / 阅读(138) / 评论(0) 分类 VOA标准英语2011年(十一月)

This is Scientific American's 60-Second Science. I'm Steve Mirsky . Got a minute ? We residents of the Milky Way should have a little extra skip in our step today. Turns out our home galaxy is much bigger and moving a lot faster than we previously th

发表于:2019-01-08 / 阅读(198) / 评论(0) 分类 Scientific American(一)月

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? The 2011 Nobel Prize in chemistry goes to Daniel Schechtman of the TechnionIsrael Institute of Technology in Haifa. Schechtman discovered what are called quasicrystals.

发表于:2019-01-08 / 阅读(286) / 评论(0) 分类 Scientific American(十)月

Is There a Ninth Planet in Our Solar System? 科学家称发现太阳系新行星 Scientists said they have found evidence of a giant planet far out in our solar system. In a statement, the California Institute of Technology Caltech -- said this plan

发表于:2019-01-12 / 阅读(314) / 评论(0) 分类 2016年VOA慢速英语(一)月

China's first cargo spacecraft has refueled the Tiangong-2 space lab in orbit for the first time. Tianzhou-1, which was launched April 20th from Wenchang Space Launch Center in south China's Hainan Province, successfully completed an automated dockin

发表于:2019-01-19 / 阅读(209) / 评论(0) 分类 2017CRI中国国际广播电台

Hours after Tiangong-2 was successfully launched, the space lab conducted its first transfer of orbit at 2:45 am Beijing time on Friday morning. In the meantime, it has also started in-orbit tests, which are a series of examinations on the functions

发表于:2019-01-19 / 阅读(187) / 评论(0) 分类 2016CRI中国国际广播电台

Space exploration 太空探索 The end of the Space Age 太空时代的结束 Inner space is useful. Outer space is history 研究内太空才有用,让外太空研究成为历史 Jun 30th 2011 | from the print edition HOW big is the Earth? Any enc

发表于:2019-01-26 / 阅读(163) / 评论(0) 分类 经济学人综合

EXPLORATIONS - 'The Greatest Experience': Ed White Goes for the First American Walk in SpaceBy Marilyn Christiano Broadcast: Wednesday, August 02, 2006 EXPLORATIONS -- a program in Special English by

发表于:2019-01-30 / 阅读(154) / 评论(0) 分类 2006年慢速英语(八)月

LONDON, May 11 (Xinhua) -- A controversial steel tower was unveiled in the Olympic park of London on Friday, about two and a half months before opening of the Games, which was hoped to become of a new icon of the city and bring more visitors. The tow

发表于:2019-02-05 / 阅读(151) / 评论(0) 分类 英语新闻

The U.S. space agency NASAs Messenger probe(正直的,廉洁的 ) is scheduled to reach Mercury later this week, and become the first spacecraft to orbit the planet closest to the sun. During Messengers year-long orbital mission, scientists exp

发表于:2019-02-05 / 阅读(175) / 评论(0) 分类 英语新闻

The U.S. space probe MESSENGER is poised to enter orbit around Mercury(水银) early Friday, Universal time, capping a nearly seven-year journey to the solar systems innermost planet. Scientists with the U.S. space agency, NASA, hope the orbiting

发表于:2019-02-05 / 阅读(159) / 评论(0) 分类 英语新闻

WASHINGTON, Jan. 1 (Xinhua) -- Twin U.S. spacecraft to study the moon from crust to core put themselves into the lunar orbit on New Year's Eve and New Year's Day, the country's space agency said. The second Gravity Recovery And Interior Laboratory, o

发表于:2019-02-05 / 阅读(187) / 评论(0) 分类 英语新闻

MOSCOW, Aug. 30 (Xinhua) -- Russia's space agency said Tuesday that a Proton-M rocket launch failed earlier this month because of a malfunction in the upper stage. The conclusion was reached by an independent investigation commission following a seri

发表于:2019-02-11 / 阅读(165) / 评论(0) 分类 英语新闻

TEHRAN, Oct. 9 (Xinhua) -- Iran is going to launch domestically- built Navid satellite by Safir satellite launcher by the end of March 2012, the semi-official Mehr news agency reported on Sunday. Navid (promise) is a research satellite and is current

发表于:2019-02-18 / 阅读(178) / 评论(0) 分类 英语新闻

Science and technology 科学技术 Dealing with asteroid strikes 应对小行星撞击 A close shave 近地掠过 After a hit and a near miss minds are focusing on the risks from space rocks 在一次撞击和一次近距离擦肩而过后,人们开

发表于:2019-02-18 / 阅读(192) / 评论(0) 分类 经济学人科技系列
学英语单词
ahead of scheduled time
all (the) year round
alloy magnet-head
amrs control center
anti-dated bill of lading
antichirping
at gage
bismuthines
blatty
blenge
Bokungu
bouting
box-stuffing
Break Even Point
Cawdor
closed impeller type sandpump
compromisings
crop-yields
data acquisition stage
dealkylations
Deyeuxia tibetica
direct product of mappings
displacings
element rectifier
equipment supporting deck
facing tile
family average propensity to consume
filled-in
flareout analysis
forcipomyia (proforcipomyia) ingrami
fredricks
frequenter
frogmouth
give oneself to
go out on a limb
gobo
gross income
helvella poisoning
HIF-1
hominy grits
hot mixer
ilex viridis champ.
inchon
input buffer storage
instantaneous unavailability
intercerebral gland
jump welded tube
leave one's bed
leijonhufvud
length of drill rod
logier
longitudinal sloping hearth furnace
magnolia states
marlea platanifolia sieb. et zucc. alangium sp.
maximum allowable offset
Midou
mini-fridge
MM2
narrow span recorder
nonzero coefficient
Ordzhonikidzegrad
panorama headache
particpation
pathological hypertrophy
pergolide
pinflag
pivampicillin hydrochloride
potato vines
practice review
pressure pouring
principle of drug action
product plus
raid report
red potassium chromate
regional appraisal
rereview
reserve-seed tree method
residual life
Rooibank
row-de-dow
salaries and wages payable
Sarakha
septum sinuum sphenoideorum
side-handle pneumatic wrench
side-shaft
stands on ceremony
succus spissatus
tated
Texas chachalaca
thioanhydride
topographical survey team
total output panel
transmission test set
treasury certificates of indebtedness
tucaresol
turk's - cap
unquestionably
upgush
vampyrops helleri
Vinether
winter-killed