原子级硅表面平坦化

Here are two seemingly unrelated facts. One: from the late 1940s through 1963, we tested atomic bombs in the atmosphere. Two: wine lovers are sometimes duped into spending exorbitant amounts for fake vintage bottles that werent from the year they wer

发表于:2018-12-24 / 阅读(46) / 评论(0) 分类 Scientific American(三)月

数千年来,大气中碳12和碳14的比例是稳定不变的,然而,二十多年以来的原子弹试验,使得碳14的水平增加。生长中的葡萄吸收了空气中的二氧化碳,而通过测试葡萄中的碳含量,就可以大致

发表于:2019-01-02 / 阅读(81) / 评论(0) 分类 60秒科学

WASHINGTON, May 1 (Xinhua) -- Scientists from IBM on Wednesday unveiled the world's smallest movie, made with one of the tiniest elements in the universe: atoms. Named A Boy and His Atom, the movie used thousands of precisely placed atoms to create n

发表于:2019-02-04 / 阅读(36) / 评论(0) 分类 英语新闻

But I want to encourage you to reject these cynics who say that technology is flattening your experience of the world Please don't let anyone make you think that you're any less somehow shallow不过我劝你们别听这些讽世者的别听他们说什

发表于:2019-02-16 / 阅读(34) / 评论(0) 分类 公众人物毕业演讲

From ground level to its highest point, the troposphere (or turning sphere) 从地面到最高点,对流层(亦称对流圈) is about ten miles thick at the equator and no more than six or seven miles high in the temperate latitudes where most

发表于:2019-02-25 / 阅读(44) / 评论(0) 分类 万物简史

The scale is of course more an idea than an object, an arbitrary measure of the Earth's tremblings based on surface measurements. 当然,里氏震级是一个概念,不是一件东西,是一个根据地面测量的结果武断地得出的地球震

发表于:2019-02-25 / 阅读(40) / 评论(0) 分类 万物简史
学英语单词
a. profunda clitoridis
abstringes
acer barbinerve maxim.
acourse
ahmadabad (ahmedabad)
antiexport
apiaristic
Awio B.
be dead to the wide
benign hemangiopericytoma
benylate
Biocal
blood cell-seeking radioactive substance
Cahuita, Pta.
calcium titanate porcelain
civilian authorities
constructional plant
container storage area
content dictionary
continuous system (continuum)
cryptocerus
d'agustino
dairens
dermolection
dipyramidal pinacoid
doping level
driving pile
enneasyllabic
ethnomaniac
farrakhan
field airdrome
financial blockade
gas line dehydrator
giant sunfish
goods-and-services
grout off
Grytefjorden
hair-line crack
Hey's internal derangement
heyfield
HGFA
high-frequency ceramic element
hill-walking
hour counter operating lever spring
hybrid ranging
I/O (input/output)
inadhesion
iphones
Jaumann tensor
kavalaris
Leknes
live-up
loop transfer function
low tech
margattea nimbata shirakii
multilinearities
nacul
nanoammeter
needle roller with cave end
nimidane
noiselessness
nonagonistic
nonunity feedback system
numeronym
ostrander
overloak
peripheral stimulation
piles us
plasma oscillation analyzer
PLESIOPIDAE
ponse
principle of minimum differentiation
propylidene
relative surplus population
Schonlein
schumannii
searchlight truck
sheet drape facies
spondylodynia
steering-wheel placing
stiffness of steering system
streblotrichum convolutum(hedw.)p.beauv
T-cut
tag converting unit
Tamaske
ten's digit
thimblerigs
touch me not
unfronted
unlocking lever nut
UX designer
venosest
vertex buffer
viscera soluble
vision electronic recording apparatus
weatherpersons
wickard
wipe roll
witful
Yanaul
zuba