准椭圆形的

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(211) / 评论(0) 分类 数学英语

76 years after Pluto's discovery and after 17 years of research and development, Nasa's new Horizon Spacecraft sets out for Pluto. Travelling at around a million miles a day, it's on a 9-year, 700-million-dollar journey to reach Pluto and review its

发表于:2018-12-27 / 阅读(797) / 评论(0) 分类 探索与发现2015年

我们今天学的词是:planet。Planet是行星。不过你听说了吗,太阳系中排行第九的行星冥王星Pluto被降级了。Astronomers' reclassification strips ninth planet of status in solar system. 国际天文学会对行星重新定

发表于:2018-12-30 / 阅读(180) / 评论(0) 分类 英语每日一词

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(304) / 评论(0) 分类 Scientific American(十)月

我们今天学的词是:planet。Planet是行星。不过你听说了吗,太阳系中排行第九的行星冥王星Pluto被降级了。Astronomers' reclassification strips ninth planet of status in solar system. 国际天文学会对行星重新定

发表于:2019-02-24 / 阅读(233) / 评论(0) 分类 学个词
学英语单词
abandonment of patent privileges
abnormal false
Air Force One
air twisting
airborne sound
anisotropic magnetohydrodynamics
be young for one's age
belt loader
besmile
box social
bridging group
business thought
cassia toras
cavum pleur? (dextrum et sinistrum)
cementation process
chain tenter
Christopaganism
chrysla
claused bills of exchange
closed split
commisioners
common-mode input resistance
compound stream
distance measurement
dotted-line
double word addressing
dry assay
dry lands
dumb tax
earth satellite vehicle
empaler
excelsiors
Exmouth
extrophia
Fermi field
flight boundary limit
flight-path analyzer
flush deck socket
Flöha
forum non competence
four cutter bit
frowster
Gaasterland
garib
gonosomite
gorce
Guizhou
heavy-ion fusion
honeymen
inquire ... of
internal insemination
intrinsic excitation
Japanese poinsettia
kyndra
L-expression procedure
leading wheel
Limoges ware
low level network
low-power logic
lunar crater
Lyman limit
marrowskies
megadontismus
metallurgic
mohsite (plumboan crichtonite)
mudcatt
multiplex operation
nervus subpharyngealis
Newgrp
nitro-anthraquinone
nosels
notho-
nylon brush
optimal bias
piano keys
pine-wool
post industrialism
priming connection
procurement practice
rear mirror
reclamation of eroded area
repercusses
rest nitrogen
Sempacher See
ship natural ventilation
sklerosphere (sclerosphere)
smoke-ball
spaceman syndrome
spring a leak
squagging
square plug gauge
Subularia
testicular appendage
there isn't any easy way to say this
two sided ideal of an algebra
unit of alcohol
United States of Europe
waterboarding
waver in determination
web failure
wooden raceway
zero regulator