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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(59) / 评论(0) 分类 Scientific American(四)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(64) / 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

The Turn of the Screw by Henry James X I remained awhile at the top of the stair, but with the effect presently of understanding that when my visitor had gone, he had gone: then I returned to my room. The foremost thing I saw there by the light of th

发表于:2019-02-24 / 阅读(40) / 评论(0) 分类 有声英语文学名著
学英语单词
abefoir
accommodative learning style
achuars
Adenophora stricta Miq.
antidust
australian plate
autointoxications
bailer
bale out
behavioral criteria
bottom-lining
by pass governor
carotid triangle
cell crgan
clambake
coelio-
compulsory subject
copy-protection
cropere
D AMPS
d'ohsson
devotionalism
discretion of costs
dudical
Eastern Church
exemption from prosecution
ferghanite
flat cold rolled bar
fleshhooks
flump
fob pocket
fourth trochanter
Gleason bevel gear generator
Glover I.
Greenock
Gunskirchen
happenchances
high-efficiency cutting
Hjarre
hydrographic survey sheet
intertwinements
inventory plans,moving average
Kirchhoff's first law
koenenite
lamp cap
laryngo-
leat
leniquinsin
log-linear
luminosity mass
lunar latitude
macropicide
magical abilities
major expenditures
mauboussin
microenvironment
mopsuestia
motor grenerator
mousebird
multi-stage pumping station
murmur
New Academy
northcentral
oceanographic instrumentation
ordinary track
orthopedic shoe
over-determination
overwroughtness
parameter-driven program
pilot's cabin
PMMP
Powell Glacier
power system stabilizer,PSS
professional sportsmen
program set station
pyroglobulinemia
red lavers
Ricci calculus
rotary positive displacement vacuum pump
rubbing alcohol
rutile plagiaplite
safety working boots
sales basis
salvinorins
scavenging precipitation ion exchange process
Schmidt lines
sequential method
sercon
sires
spetted
sprite
Sulfatrim
Sulfaturia
sunde
thierer
trainiac
transferee corporation
trial grade line
vapour losses
warioba
wintera coloratas
Yasun Burnu