准临界阻尼

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(71) / 评论(0) 分类 数学英语

Situation Critical 十万火急 by Kevin Lustig In some jobs, danger can appear at any moment. In the blink of an eye, the routine can become perilous. This month, the National Geographic Channel shows us what happens when a normal situation becomes

发表于:2018-12-08 / 阅读(81) / 评论(0) 分类 常春藤解析英语

The UN has just issued a report saying that six million people in Myanmar need food right now. How critical is the situation? It's a real paradox, because in the same year that Cyclone Nargis devastated the, what had been the rice bowl of Myanmar, th

发表于:2018-12-11 / 阅读(86) / 评论(0) 分类 访谈录2009

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

In the Pacific state of Hawaii, U.S. President Barack Obama on Sunday told leaders of the 21 Asia Pacific Economic Cooperation economies that the region will be key to U.S. economic recovery. With much of the formal summit activity, including a worki

发表于:2019-02-08 / 阅读(61) / 评论(0) 分类 英语新闻

By Scott Stearns Dakar 08 October 2009 Cameroon President Paul Biya (file photo) Authorities in Cameroon have closed a private FM radio station that has been broadcasting illegally from the capital for several months. The station was highly critical

发表于:2019-02-18 / 阅读(48) / 评论(0) 分类 VOA标准英语2009年(十月)
学英语单词
acoustic emission monitoring
adjustment of astrogeodetic network
artotypes
axle gage(axle gauge)
bilge pump accessories
biophysicists
Blizne
bright point
burlesque show
camponotus rothneyi tainvanae
cherried
coaxial circle
current excitation
Cyamus
cyberlaundering
damp (-proof) course
daturametelins
deeds of high resolve
Deleitosa
dibenzacridine
double-dry calorimeter
dry-wood weight
emotional trauma
entities in frbr
Evariste Galois
fellwalkers
fetchingly
forced-recirculation boiler
fortune-teller
francis turbines
fraternal society
gamma leakage spectrum
Gorda, Banco
halch
half-bright
hardened case
histogram of difference
horse pucky
hump-shaped pad block
humping bead
hydrostatic testing machine
hyper-inflated
international system of units (si)
Khrystoforivka
Khāvāk, Darreh-ye
korp
long traverse winding
look through rose-coloured glasses
Luristan
management science system
medhas
multiplepoinding
national comprehensive development plan
nubronze
obies
orozcoes
over and under design
ozone-resistance test
Papadianika
patinating
personal digital assistant
popularization of good strains
pout-net
propionyl salicylic acid
protolytic enzyme
punchings
purinometer
racemic calcium pantothenate
railway cross cut saw
railway grand division
rami externus nervi accessorii
reaction kinetics
reese's
rusyns
saro
scramming
sea coleworts
sellanders
seryozha
sheinman
shortcut name
slump belt
sound pressure
special purpose vehicle
spermatocyst grasping forceps
ST_including-and-excluding_covering-and-adding-layers
stannous oxide
stomach flus
storage number
stored heat
tail-pulley screw take-up
tailwort
Temple Bar
toco-ergometry
trimmer conveyor
Turner type pore structure
twin-cone mixer-granulator
ulmic acid
under the influence of
vaisons
vibrocast concrete
wave property