声面波元件

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(84) / 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(87) / 评论(0) 分类 汪培珽儿童英文分级书单《神奇树屋》

Future Smart Devices Will Extend Our Senses Imagine shopping for clothes online and being able to run your hand across the screen on your computer or smartphone to feel the fabrics. That kind of simulation technology could be available within the nex

发表于:2018-12-16 / 阅读(57) / 评论(0) 分类 VOA标准英语2013年(二月)

Today is the first deadline for Syria regarding its chemical weapons program. International official said the country is on target. Syria's civil war started more than 2 half years ago. It's not over. Government troops and rebel forces were fighting

发表于:2018-12-19 / 阅读(82) / 评论(0) 分类 CNN2013年(十一)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. In theory, scientists could learn a lot about our health by testing tiny amounts of bodily fluidsa drop of blood, a tear, a bead of sweat. But somethin

发表于:2019-01-08 / 阅读(93) / 评论(0) 分类 Scientific American(十一)月

This is Scientific American's 60-Second Science, I'm Cynthia Graber. This'll just take a minute. When Harry Potter slips underneath his invisibility cloak, he can wander freely undetected, but what about a cloak of silence, one that completely deaden

发表于:2019-01-08 / 阅读(100) / 评论(0) 分类 Scientific American(六)月

Lindsey KaneYou'll be whole to the one in the corner i got something to say you have never been alone know not even a day and i know that you feel a hope is gone away lost and fogot it and things take it away~~ but you wanna always be this way so you

发表于:2019-01-09 / 阅读(62) / 评论(0) 分类 好听的英文歌曲

Technology Report - Mobile Devices' Location Tracking Raises Privacy Concerns This is the VOA Special English Technology Report. Lawmakers in the United States have expanded an investigation into the use of location-tracking systems on mobile devices

发表于:2019-01-12 / 阅读(88) / 评论(0) 分类 2011年VOA慢速英语(五)月

By Doug Levine Washington 27 June 2007 It's been more than 15 years since saxophonist Joshua Redman won first prize at the Thelonious Monk International Jazz Competition. That honor proved to be a worthwhile stepping stone, as he went on to record mo

发表于:2019-01-13 / 阅读(119) / 评论(0) 分类 2007年VOA标准英语(六月)

Chris Hillman Edward Pederson's At Edwards BarnChris Hillman and Herb Pedersen had bluegrass in common when they met as teenagers in Los Angeles back in the early '60s, but the two didn't make much music together until years later. Hillman first came

发表于:2019-01-13 / 阅读(76) / 评论(0) 分类 VOA标准英语2010年(十二)月

LOURDES GARCIA-NAVARRO, HOST: If you're familiar with the band Disturbed, you're probably used to hearing them sound like this. (SOUNDBITE OF DISTURBED SONG, INSIDE THE FIRE) GARCIA-NAVARRO: But last year, the band softened its sound when they covere

发表于:2019-01-16 / 阅读(72) / 评论(0) 分类 2017年NPR美国国家公共电台1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(126) / 评论(0) 分类 2007年VOA标准英语(九月)

Humans have used many devices to measure time. The sundial was one of the earliest and simplest. A sundial measures the movement of the sun across the sky each day. It has a stick or other object that rises above a flat surface. The stick, blocking s

发表于:2019-01-22 / 阅读(54) / 评论(0) 分类 英语时差8,16

Non-Stick Surface On Med Devices Could Keep Bacteria At Bay 医药设备的不黏涂层可抑制细菌生长 In lab tests, catheters coated with a non-stick surface harbored far fewer Staph bacteria than conventional devices. Gretchen Cuda Kroen repo

发表于:2019-02-01 / 阅读(66) / 评论(0) 分类 VOA常速英语2013年(九月)

Abadie's Sign Chinese阿巴迪征(跟腱受压无感觉,见于脊髓痨) Abaptiston Chinese安全开颅圆锯 abarognosis Chinese压觉缺失 abasia astasia Chinese立行不能 abasia Chinese步行不能 abdominal reflex Chinese腹壁反射 abduction Chinese外展 abiotrophy Chinese生活力

发表于:2019-02-07 / 阅读(100) / 评论(0) 分类 英文语法词汇

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(64) / 评论(0) 分类 2018年科学美国人1月

At an event in New York on Wednesday, Microsoft unveiled the sleek Surface Studio: a 28-inch all-in-one PC that converts into something akin to a digital drafting table. Reclined at about 20 degrees, it can be used with a dedicated stylus and so-call

发表于:2019-02-17 / 阅读(45) / 评论(0) 分类 阅读空间

The Way It Goes (Acoustic) - Passenger One man's home is another man's journey Stars shine late and the sun shines early One man's straight and another man's curly It's just the way it goes One man's trash is another man's treasure Rummaging around i

发表于:2019-02-18 / 阅读(81) / 评论(0) 分类 英文摇滚歌曲

The Consumer Electronics Show has been a big event in the United States for years, but the first ever event in Asia is now open in Shanghai. The fair is a showcase for all sorts of digital devices. One popular range of products at the event is wearab

发表于:2019-02-18 / 阅读(96) / 评论(0) 分类 cctv9英语新闻2015年

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(67) / 评论(0) 分类 英语时差8,16
学英语单词
acga
anoplophora versteegi
arbitratorship
argillaceous rocks
astraean
autohaus
autologous tumor vaccine
automatic voice advice (ava)
benzofurancarboxylic acid
bites
block error probability
bondagers
Bourdon tube type manometer
bracket product
broken words
calamus formosanus becc.
calibration-factor
ceruminolytic
chisata
closed
closed ionization chamber
closing day
commutation-test
concurrent microoperation
control crank
data artist
dendri-
domestic tribunal
dumples
El Pocito
expenses and receipts on balance
exsiccated sodium sulfite
fantasizer
ficous
figging of soap
finite layer of soil
full spelling
gas amplification factor
gewlekhite (gyulekhite)
giant fennel
gluiness
go into the stratosphere
Grand Masters
GRK3
heat sink shield
Heisenberg uncertainty relation
industrial refuse
internet chat
ironless armature
IT asset management
Katesh
Ketanov
knowledge proof
l'empire
lattern
Legaspi
Lessie
light-proof
Longinean
magnesiogedrite
Magnolia(Magnolia)
malto dextrin(e)
marivans
Mesolithic
metal power flow meter
mouse milk factor
nonlinear optical coefficient
on the scroll of fame
Pergamese
phosphate comparator
ponts
raps out
reservoir regulation
retardation function
Reuschenberg
ring the bell
riyal
rotor circuit
roughhewers
run someone through the guts
Sargentu Loros
Schultz's method
scraping straightedge
sectional rod
signal isolation
sixty-eight
soft ripe stage
solid welding wire
specified costs
splayed door
stern loader
substrains
syringe pipet
travelling wave klystron
Treungen
typegraphical
udhk
untenting
varifies
vessel head storage ring
wirerooms
Yavuzkemal