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美国动力公司研发提升五成油效对置活塞二冲程发动机 This little engine looks like it has only three pistons, but in fact, it has six, sharing only three cylinders. 这台小身材引擎看起来只有3个活塞,但事实上却有

发表于:2018-12-16 / 阅读(56) / 评论(0) 分类 VOA标准英语2016年(三月)

What Do Octane Numbers Mean? At the gas pump, you have a choice of octane numbers. 87? 93? Whats the difference? To explain octane numbers, lets take an imaginative leap into the internal combustion engine of a car. Inside the cylinders are combustio

发表于:2018-12-31 / 阅读(57) / 评论(0) 分类 英语听力文摘 English Digest

This is Scientific Americans 60-Second Science, I am Cynthia Graber .This will just take a minute. How can we improve engines, inhalers and fire extinguishers? Maybe by copying a beetle. The bombardier beetle's name might scare off predators if they

发表于:2019-01-08 / 阅读(60) / 评论(0) 分类 Scientific American(四)月

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. On March 11th, Interior Secretary Ken Salazar called for a moonshot for energy independence. Hes set up a task force to look into the large-scale product

发表于:2019-01-08 / 阅读(76) / 评论(0) 分类 Scientific American(三)月

This Internal Combustion Engine is 50% More Efficient 新型内燃机效率提高50% Internal combustion engines in cars may be on their way out, but experts agree it will take a few decades before electric-powered vehicles become dominant. Meanwhile

发表于:2019-01-14 / 阅读(65) / 评论(0) 分类 VOA标准英语2016年(三月)

Anirudh Sharma doesn't just want to pull harmful carbon from the air. He wants to offer a cheaper alternative to the exorbitant costs of ordinary printer ink. 阿尼鲁德夏尔马不仅想除掉空气中的有害炭物质,还希望创造一种更便

发表于:2019-02-13 / 阅读(56) / 评论(0) 分类 阅读空间
学英语单词
144
acethydrazide
acidic gas
adjustable equalizer
amyl isosulfocyanate
analysis chart
basic character set
benzidine test
branch on false
bright wound
chin tsou t'u
clack-dish
Clorolifarina
collector base junction
conodrymium
control sensitivity
cytoplast
cyyn
damaster blaptolabrus hanae
dauers
daybogs
debugability
dedicated satellite communication network
disablingly
diskless
do your own thing
easy language
electronic colour corrector
electrons
energy saving design
feeding time
flatwater
footracing
formal institution
formation flight
gatland
general-purpose mobile crane
Gentiana crinita
get on ... nerve
great bear market
heavy-duty pressure tunnel
htas
hunting sword
injunctional
inorganic insulator
inspirs
into the wound
isentropic compression
jimenez del teul
L10
Lacourt
left hand screw
less-sodium
letter box.
lieberson
light measurement
lightening a ship
loxoconcha tachangfui
Mahumetanism
malaiss
median foveola
mogul
monosexuality
multiband spectral camera
parallel/serial converter
parmers
pharyngotonsillitis
phatnoma
phenetic ranking
phenyl hydrazones
photoproduced mesons
polyparia
Potenza, Prov.di
pulse-wave
radar vector
random screening
rayd
reminiscents
retouch
rotable nozzle
round-trip flight
rushing-water
scorecards
second median area
senna occidentaliss
serreli
Solganol
solid cladding
spacer
Suricata
tab key
Teramnus labialis
Tex Avery
theory of psychological crisis
Tollens'reaction
total print control
trawl bridge
Tripterospermum taiwanense
unjust dismissal policy
unrainy
vector quantization
Yurga