钛钙型焊条

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发表于:2018-12-01 / 阅读(97) / 评论(0) 分类 用Mp3背六级单词

This is Scientific American's sixty seconds science, I'm Christopher Intagliata. Got a minute? Instead of installing solar paint on your roof how about just giving a house new paint job of cause you'd have to sure to use solar paint. That's what to a

发表于:2018-12-02 / 阅读(92) / 评论(0) 分类 Scientific American(十二)月

Lesson 38 Text A Can't She Type? The well-known banker, T. J. Ellington, was at one time in his younger days the manager of a New York office. His secretary had been with him for many years, and knew

发表于:2018-12-02 / 阅读(144) / 评论(0) 分类 初级口语教程

Bacteria Discovered To Recharge Cell Phone A microbe called Rhodoferax Ferrireducens,found in the mud at Oyster Bay,Virginia,has been discovered to transfer electrons directly onto an electrode

发表于:2018-12-18 / 阅读(64) / 评论(0) 分类 有声杂志阅读

Time for M.I.T.s Clean Energy Prize. The annual competition gives teams of university students a chance to compete for $200,000 to kick-start their new clean energy business. One finalist designed a compression technology for natural gas wells that w

发表于:2019-01-02 / 阅读(266) / 评论(0) 分类 60秒科学

This is Scientific Americans 60-Second Science. I am Cynthia Graber. This will just take a minute. Solar panels typically convert sunlight into electricity or heat. But photosynthetic vegetation converts sunlight into chemical energy. Now M.I.T.s Dan

发表于:2019-01-04 / 阅读(73) / 评论(0) 分类 Scientific American(八)月
学英语单词
a DAN
ability of manager
air cleaner adapter
air cylinder valve connection
anokhin
appellate
arbitrary verdict
axiomatical
Bangladeshis
Bothragonus
Brassica kaber Wheeler
breakdown shock wave
Brown Bilbos
captive items
Carson curl tester
clonmacnoises
constrained variable metric method
corn cockles
coupling scheme
credit arrangement
curator
currency reserve debtor
D. A. T.
daban
drag image
electric discharge detector
ethyl glyoxaline
exact to the letter
exhaust piping
facies medialis hemisph?rii
finishing-off
fluor-scent
full stops
fundmental disequillibrium
Galton's individual difference problem
geogs
goodo
in the open street
integral blade
intermediate recovery
International Association for Water Law
Jacqui
judge's comment
Laius
Lebesgue
light coloured beer
Lākhuti
marvailed
mercy dash
monobosom
moth millers
mould yard
no increase
Nojon-li
ogle
one-child
order isomorphic
Ostyak-Samoyed
ozbek
partial vaporization
pendant crown wire
perma-boner
phormio
pigeonhearted
plasterboard nail
plate-type heat exchanger
platform boot
pleural mouse
Porto Rican
prepuce of the clitoris
prime material
putrefactive spoilage
register length
sanctified
schwartzberg
selfesteems
sleaths
slow-motion dial
sonographs
Spanish Guinean
squigglies
straight wind
stress release boot
syntactic pattern
Thermopsis smithiana
to present ... credentials
toolmaker's gauge
trappability
Traubach-le-Haut
tymolus uncifer
ultrasonic therapeutic apparatus for brain
unforged
unformatted diskette
valmet
vena ophthalmica
ventilation circuit
vise-like
voice amplifier
wet-oxygen oxidation
white sea (beloye more)
wilkes lands
Zeitgeber