准分子态

by Jason Marshall Weve now talked about three methods for calculating average values: the mean, median, and mode (affectionately known as the three Ms). So, are we done? Is that everything we could ever want to know about interpreting average values?

发表于:2018-12-07 / 阅读(76) / 评论(0) 分类 数学英语

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Just when you thought youd heard everything, scientists have found that the reason you can hear everythingincluding things that are very quietis because

发表于:2018-12-24 / 阅读(49) / 评论(0) 分类 Scientific American(四)月

Todd: OK. Hey, hello! Tim: Hey, how's it going? Todd: Doing pretty good. Could you introduce yourself please? Tim: Yeah, I'm Tim Peterson. I'm from Oregon in the United States. Todd: Oh, nice. You're from Oregon. Tim: Yeah. Todd: OK, and were you bor

发表于:2019-01-02 / 阅读(59) / 评论(0) 分类 英语访谈对话

The 2009 Nobel Prize in Chemistry goes to Venkatraman Ramakrishnan of the MRC Laboratory of Molecular Biology in England, Yale Universitys Thomas Steitz, and Ada Yonath of the Weizmann Institute of Science in Israel for their studies of the ribosome.

发表于:2019-01-08 / 阅读(72) / 评论(0) 分类 Scientific American(十)月

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? The 2011 Nobel Prize in chemistry goes to Daniel Schechtman of the TechnionIsrael Institute of Technology in Haifa. Schechtman discovered what are called quasicrystals.

发表于:2019-01-08 / 阅读(72) / 评论(0) 分类 Scientific American(十)月

1. Rescue workers in central China are frantically searching for survivors in rubble like this. Heavy rain continues to fall in the area after a 7.9-magnitude earthquake killed about 10,000 people. Chinese officials say there is a push to clear road

发表于:2019-02-11 / 阅读(93) / 评论(0) 分类 美联社新闻一分钟2008年(五)月
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airport surface detection equipment
all-at-once
aluminum trisilicate
annual average daily traffic
aquopentamine cobaltic salt
atmospheric explorer
balancing machine sensitivity
ballast bed finisher
Belogor'ye
Bizantian
blade fin
Boolean calculus
by pass block
capital expansion
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Ceroxylon alpinum
chemical transfer pump
cheop
choaspes
cida
come up to the chalk
consumption of life cycle
cool-out
Cyclobalanopsis annulata
D'Alembert paradox
data memory
deflection anemometer
direct marketing by personal solicitation
disaggregation model
distortionless power out-put
east part
etectus
Eustace Smith's accentuated
explorer role
external jugular veins
flick-out
fluviometric
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garden engineering
general discussion
genomovar
genus lampriss
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gratifyingly
gravitational mirage
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hydatiform
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ILDL
imborsation
insurance agreement
jinket
kited
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levodropropizine
linowitz
lock-and-key protection system
low-tin bronze alloys
magnesium salt
marney
mcln
micrometric microscope
montane bog
muddiman
multiple grooved pulley
non-circular turning
oophorauxe
physical layout editor (LED)
phytocoenogeography
porcupiness
portugese
prairie marmots
pseudo-wild
quiet hip disease
quinizarine
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retriggerable one shot multivibrator
rhododendron mariae hance
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Tourba
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Winter's Tale