音标:[ækˌseləˈreɪʃənz] ;
n. 加速( acceleration的复数形式 ); <物>加速度; (车辆)加速能力; (优秀学生的)跳级
n. an increase in rate of change
n. the act of accelerating; increasing the speed
n. (physics) a rate of increase of velocity

By Al Pessin Pentagon 31 October 2006 U.S. Defense Secretary Donald Rumsfeld says senior American generals in Iraq and the Iraqi government are proposing an increase in the target number for Iraqi security forces, but he would not say how much the i

发表于:2018-12-07 / 阅读(127) / 评论(0) 分类 2006年VOA标准英语(十月)

New Device Detects Pilot Blackouts WASHINGTON During certain maneuvers, jet fighter pilots sometimes experience loss of vision and even loss of consciousness. Although short, these so-called blackouts can have tragic consequences. An Israeli company

发表于:2018-12-16 / 阅读(104) / 评论(0) 分类 VOA标准英语2015年(六月)

新装置或能降低战斗机飞行员失去意识情况 Two different physiological situations can lead to a pilot's loss of consciousness,says Elbit Systems senior research and development director, retired fighter pilot YaronKranz. 埃尔比特系统

发表于:2019-01-14 / 阅读(92) / 评论(0) 分类 VOA标准英语2015年(十二月)

You might think frogs catch insects cause their tongues are sticky. But why is the tongue sticky, and how does it actually adhere to these insects at these very high accelerations? 也许你认为青蛙能捕食昆虫是由于舌头很粘的缘故。但

发表于:2019-01-20 / 阅读(135) / 评论(0) 分类 2017年Scientific American(三)月

Frog Spit Behaves Like Bug-Catching Ketchup 青蛙唾液竟然类似番茄酱? You might think frogs catch insects cause their tongues are sticky. But why is the tongue sticky, and how does it actually adhere to these insects at these very high acc

发表于:2019-01-20 / 阅读(88) / 评论(0) 分类 2017年科学美国人(七)月
学英语单词
achromatosis
acquisition cession
agate bearing
al-hasan ibn al-haythams
Alpinia densibracteata
amarjits
aptotes
assessment of time preference
attenazio
AURPO
autoinducible enzyme
available space list
aviling
bala
be said to
be sparing of oneself
bipolaron
bird-songs
boiling water
Bouvet Fracture Zone
capping shutter
clearer belt
clunged
commissorial
continuous current rating
coprime
costusroots
Cryptochilum
DDR5
Druzbice
dual dimensioning
earth's polar radius
eke out one's livelihood
El Viso del Alcor
electric press
electrical resistance alloys
enterovaccine
erythrocytic segment
evaporating heating surface
feeldevice
fiato
finder screen
forward welding
g.z
genus Mikania
geologic joint
giant magnetoresistance materials (gmr)
gynostemma pedatum bl.
hematophyte
incasing
Isometrum leucanthum
Johnson counter
jurier
kachin
knife lever
konon
Lambeth walk
Lassar's paste
ligamenta tibiofibulare medium
logwood trees
lower confluent acupoint
marine bottom proton sampler
MCMLXXXIV
medium pacers
medium plate
microprogrammed subroutine
mouthguards
multiplication algebras of matric
Namyu
neuroanatomies
Olives, Mount of
phasic difference
pine-forest
pini-
platypezids
POADS
pollywog
Pont-de-Salars
predictive engineering
retained foreign currency account
screefing
Skoptsi
Smokey-the-Bear
sod formation
south bound node
stable oscillation
stefanovic
symmetrical system
temper current
the big enchilada
theological
thread tree
time series analysis method
totem pole
toxic uveitis
train it
tree cabash
unit labor cost index
uronterin
vehicle fuel saving technique
yearly
yellow-throated martens