氨基甲酸脂聚合物

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Are your car bumpers riddled with scars from encounters with tight parking spaces? Did the furniture movers scratch your floor? Wouldn't it be great if t

发表于:2018-12-24 / 阅读(147) / 评论(0) 分类 Scientific American(四)月

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(178) / 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(158) / 评论(0) 分类 Scientific American(一)月

Lowering the Ceiling on Roof Energy Losses 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 traditional black asphalt roofs heat up in summer and s

发表于:2019-01-02 / 阅读(163) / 评论(0) 分类 60秒科学

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(210) / 评论(0) 分类 Scientific American(九)月

Patients undergoing coronary bypass surgery need implants of new, healthy blood vessels. So do those who receive repeated hemodialysis due to kidney failure. The best option is to use the patient's own veins or arteries, but thousands of patients don

发表于:2019-01-08 / 阅读(164) / 评论(0) 分类 Scientific American(二)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(213) / 评论(0) 分类 Scientific American(四)月

Research Breakthrough for Biodegradable Tires? 研究人员研发完全可降解轮胎 Researchers say they have created a new synthetic rubber that could be used to make biodegradable tires. A team at Texas AM Universitys campus in the Gulf nation o

发表于:2019-01-12 / 阅读(122) / 评论(0) 分类 2016年VOA慢速英语(九)月

'Smart' Bandages Could Heal Wounds More Quickly 智能绷带有助更快治愈伤口 Simple bandages are usually seen as the first line of attack in healing small to moderate wounds and burns. But scientists say new synthetic materials with embedded

发表于:2019-01-14 / 阅读(233) / 评论(0) 分类 VOA标准英语2016年(二月)
学英语单词
a gat
AADS
alchornea rufescens franch.
all-nighters
altocor
apical line
artificial distintegration
automatic deletable mode
backhoes
benaglia
bimolecular reduction
bottom drive press
boy's-love
broke up with
bryaninops loki
Bursa subtendinea musculi gastrocnemii medialis
carbonate compensation depth (ccd)
carhartts
caulerpa racemosa macrophysa
chumps
cinetoplasm
COFDM
coinvestigator
command file to terminal interplay
connecting fibrocartilage
direct amplification
directest
drive current wire
dumbbell molecular model
early-to-bed
electrodynamic cutter head
enflowered
fundamental particles
general superintendent of police
genus Juniperus
gloppy
glow discharge loss
godparenting
granuloma multiforme
greater fire risk
grinding machine operator
grovel
hanbo
indemnity association
infinite plane (slab) neutron source
izabella
Kyiv
lce
leukacytic ferment
limit of tolerance
Länsi-Suomen Lääni
major equipment
measuring out
memory section
Minino
molybdenum chloride
multiscale method
Nanumanga
nightsweat
nilgrowth economy
nodular amyloidosis
nose bag
notch(ed) impact strength
official selling price
orbitelous
over feed threshing
package tour
periorchitis adhaesiva
peritectic reaction
physical delivery system
plagiarical
points of intersection
polygala fallas hemsl.
portulaca marginta h.b. et k.
Primula anisodora
pulling-off silk end
question of principle
rathoffite
reactively
ring pole
ripple current rating
safetycode
see stars
semi-shade
signal fires
simulation process-oriented language
sit loose to
social welfare
static horizon sensor
teach mode
teriyaki
terminal control device
thermal source brightness
thermostable
throttle trade
transmeatal
walke
water tanker
water-activated
western poppy
woodhill
Xicotencatl