[化] 乙烯高聚物

This is Scientific American's 60-Second Science. Im Cynthia Graber. This will just take a minute. Buildings consume about a third of the energy and two-thirds of the electricity in the U.S. Roofs are a good place to try to cut those figures. Because

发表于:2018-12-24 / 阅读(77) / 评论(0) 分类 Scientific American(三)月

Most of us blink without thinking. But people whove sustained strokes or combat injuries can lose their ability to blink. Which is important for lubricating and cleaning the eye. Surgery is an optiona small piece of muscle transplanted from the leg c

发表于:2018-12-24 / 阅读(60) / 评论(0) 分类 Scientific American(一)月

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute?. [Spray sound.] Killing bugs? No. [Spray sound.] Deodorizing the bathroom? No. [Spray sound.] Checking for explosives, yes. Because chemists at the University of Califor

发表于:2019-01-08 / 阅读(78) / 评论(0) 分类 Scientific American(九)月

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Solar cells convert sunlight to electricity. But they don't take advantage of all that solar heat, thereby missing out on the majority of the solar ene

发表于:2019-01-08 / 阅读(107) / 评论(0) 分类 Scientific American(四)月

This is the VOA Special English Agriculture Report. Companion planting is the idea that when some crops are planted together, they help each other grow. These compatible plants generally have similar needs for nutrients, soil and moisture. Advice fo

发表于:2019-01-11 / 阅读(67) / 评论(0) 分类 VOA慢速英语2009年(八)月

Agriculture Report - Friends With Benefits, in the Plant World 农业报道 - 植物世界的互惠互利 From VOA Learning English, This is the Agriculture Report in Special English. 这里是美国之音慢速英语农业报道。 Companion plantin

发表于:2019-01-12 / 阅读(64) / 评论(0) 分类 2013年VOA慢速英语(三)月
学英语单词
absorption spectrometry
affectioning
aftercooler
all by one's lonesome
assembly language programming
bilocal operator
branchipodid
calcium physiology
Camellia glaberrima
cappy flavo(u)r
catchword
contingency interrupt
crest of bands
culaneous tag
dampeningly
douie
dual-spring configuration
energy technician
fatal illness
federal rules
ferrohematoporphyrin
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fusion tubes
genus musteluss
geochemist
gift pack
gramatobothus krempfi
gravel plain
Haematopus
halerpestes ruthenica (jacq.)ovcz.
have fight in one
Helm Point
hercoblasting
herte-bren
high order term
hundred thousands
hwu
hypersociality
interproximal
intersticial water
investment tax credit rules
launchman
Laurasian
looks up to
lycophron
Maipedopa
massagings
mesopin
mishegaass
morgenstein
nasal root
NasDem
natural spice
Negro spiritual
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neotectonic map
Ngan Pha, Song
Nikoban
NM
nongran
Nueva Galia
orun
overawful
Pacific equatorial countercurrent
papular fever
paramorphism
photoclinometry
pig mold
polyateral
powered by
pre-pay station
pressure cylinder
Program trades
Pyralmandite
rhinogobius lanyuensis
rotationally cooled laser-induced fluorescence
rough green snakes
ruby-throated hummingbird
run-off slag
Schwann-cell tumor
scissorstails
section hand
self-lock
sertraline
short-circuit current
slightly viscoelastic fluid
speckle shearing interferometry
spv
stand-by compressor
state-dependent memory
subatomic particles
swivel portion of cutter head
target vessel
the Court of Session
triggering system
two and eight
United Queendom
uqTBP25
wanted signal
weight-loaded regulator
work flow management