字表面声波延迟线

Windows Vex Bats' Echolocating Abilities 干扰蝙蝠回声定位的烦人窗 Just as humans understand the shape of our surroundings by how light reflects off objects, bats use reflections of sounds they produce insteadwhats called echolocation. But

发表于:2018-12-02 / 阅读(68) / 评论(0) 分类 2017年Scientific American(九)月

Jack plunched down into thesea, the water was freezing cold, hepumped back up to the surface, choaking and coughing, the lifevest kept Jack closed, but the waves kept hammering at him. Help! Jack shouted. Thought to the twenty foot tiger shark, andmy

发表于:2018-12-10 / 阅读(70) / 评论(0) 分类 汪培珽儿童英文分级书单《神奇树屋》

Digital Age Survivors, Japans Jazz Cafs Still Attract Fans It was never about the coffee. Long before customers had a choice of a double espresso or soy latte, Japanese flocked to coffee shops serving just a couple of kinds of beans, but an endless v

发表于:2019-01-14 / 阅读(42) / 评论(0) 分类 VOA标准英语2012年(二月)

By Liu Enming San Francisco, California 04 September 2007 Pipe picks up sounds created by waves At the tip of a tiny peninsula near San Francisco, California's Golden Gate Bridge stands the Wave Organ, a work of art that allows people to listen to mu

发表于:2019-01-20 / 阅读(96) / 评论(0) 分类 2007年VOA标准英语(九月)

Just as humans understand the shape of oursurroundings by how light reflects off objects, batsuse reflections of sounds they produce insteadwhat's called echolocation. But despite theirexcellent sensing abilities, one type of obstaclevexes the animal

发表于:2019-02-14 / 阅读(38) / 评论(0) 分类 2018年科学美国人1月

Those waves hitting the sand actually begin far out at sea. And it doesnt take much to get them going. A little wind will do the trick. First the wind blows over the surface of the water, generating the little ripples you can see just by blowing acro

发表于:2019-02-23 / 阅读(49) / 评论(0) 分类 英语时差8,16
学英语单词
access compatibility
achron
analytic survey
anambras
anterior palatine arch
apartheid-era
Bol'shoye Mares'yevo
bray out
breathly
brittle willow
brush with tail
buttermilk sky
cacoons
cake of thread
capacitor series resistance
centrifugal milk homogenization
child otorhinolaryngology
chooseling
combinatory topology
cowherd
decimalise
destroy weed growth
directional radiation detector
disabled access
dynamic analog device
eight-daier
enhouse
enlscope
external service chain
finabler
foamed glass
genus agaliniss
gleicheniaceaes
gold dollar
heartwell
hermaphroditic monoecious
high-occupancy
hsien shao ch'?
hustling
ieee floating point standard
impleat
in the train of
inella chrysalis
inspecting stand
JJ
juglandifolia
Kurthasanlι
kusin
Kussmaul-Landry paralysis
language translation
Lauderdale County
lempiras
liability accident
luxury cars
malon oil
Markovnikov
mean square error efficiency
mellis
mental soundness
microprogramming language
mis-sense
multiplicity of tangent
Niccolo Paganini
night editor
non-minimum phase system
nouveau art
optical asymmetry
palmella formation
parameter linear programming
peak average ratio
persistent omphalomesenteric duct
phosphors
planet reducer
positive interaction
processor register space
pusses
rascalities
rations
reinforced ceramic coating
renewable credit
Rhagphthalmidae
rhenium(vi) fluoride
schreiber method
single flame
soba noodles
space range radar
steppenwolves
swash pool
swor
syouryou odori (japan)
take an order
tetraenes
Thalictrum tsawarungense
theory of gravitational instability
titleist
ubs
ultion
verdict
wetwork
winding-up order
Woodruff County
xanthomonas rubrilineans(lee et al.)starr et burk-holder