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(251) / 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(246) / 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(228) / 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(279) / 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(218) / 评论(0) 分类 2017年科学美国人(七)月
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a plump lie
a rear area
abaptista
Al Khurayb
ambrisentan
amorphous silica-alumina catalyst
Arrou
artemosia
autologous skin grafting
Basedow's disease
benzoylecgonine
biotic dispersal
carsinich
caudal nucleus
celphos
column rank
come on over
commutator ear
contact preparation
convolute surface
cubic boron nitride abrasive wheel
derma-
diamino-acridine
dominating series
double-differential cross-section
drosty
dry-element battery
easterly trade wind
eat sb.'s salt
effervescent mixture
egocentricity
enable pulse
erg-
fly wheel rib
frequency square
grade chart
graded algebra
honey-comb coil
impact force
institutional support
ion acoustic waves
isogogical
isolating device
jean bernoullis
joint offence
Kalkfontein
kodras
Krynica
lead phenate
LFAB
Lycianthes marlipoensis
metallurgy of alkaline-earth metal
mizz
molarion
motor train set
multiserver system
nakri
nallet
nanophthalmus
noncaring
nonreplicative
northeaster
observed value
Oloyskiy Khrebet
orfordnesses
orthopterous insect
output regulation
overhead rack
pace yourself
panonychus ulmis
point filament
polystictin
port to port service
pulp remnant
put sb at ease
pyranose ring
Razgon
ride meter
rope plucking
Ružomberok
semi-floret
speed-table
spiral-ramp vortex generators
steady-state process
steady-state test
stock equity
submerged groin
sulbutiamine
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synchros
Tamiops
test data selection criterion
three-dimensional consolidation
time code muting
toplighting
totooing needle
UHF tag
United Engineers & Constructors Incorporated
well-adapted
wheel bearing inner cup
zero-power factor
zygomatic branch