准谐波振荡

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(161) / 评论(0) 分类 数学英语

This is Scientific American's 60-Second Science. I'm Christopher Intagliata. Got a minute? Why do some chords sound sweet but others make you wince? Well it appears our earsor at least the ears of 250 Minnesota undergradsprefer chords containing harm

发表于:2018-12-24 / 阅读(157) / 评论(0) 分类 Scientific American(五)月

Students who listened to different chords rated as more pleasing the ones that westerners think of as harmonious, the individual notes of which have definite mathematical relationships 【英文文本】 Why do some chords sound sweet but others make

发表于:2019-01-02 / 阅读(148) / 评论(0) 分类 60秒科学

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(231) / 评论(0) 分类 Scientific American(十)月

Vocalist Catherine Russell is always searching for that next great melody. She's found more than a dozen of them to sing on her latest album, Inside This Heart Of Mine. Catherine Russell is a perfectionist when it comes to choosing her material. Her

发表于:2019-02-06 / 阅读(149) / 评论(0) 分类 VOA标准英语2010年(六)月
学英语单词
adeles
administrational
alpha adrenergic receptor
aminyls
arrowleaf
artesian
aster scaber thunb.
auto-blocking
axle assembling stand
bacidia scrobiculata
be up to the mustard
bell-mouth
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biosynthetic labelling
business portfolio analysis
cadmium dimethyl dithiocarbamate
centro-square needling
cold water tank
complex reflex
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copper-aluminium welding rod
dienophilic
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ectodermal derivative
eluant stripper column
empeached
end runs
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everyday racism
expediente
flat-mate
flecha
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free burning
fuel support grid
Gentiana parvula
Hollola
huurre
in-place permeability
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inter-zonal
jumping on
kritik
kyl
leftstereophonic channel
lelande
liquid crystal memory
live out of tins
Llink
location services
locked-up stress
metalloendoproteases
MICEX
minor triad
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mountain-biking
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Nuvanol N
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on the wagon
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producing interval
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Schizosaccharomyces hominis
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sethack
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who on earth
would not cross the road to do something
Xiaoqu