群的交换元素

Today that sounds ridiculous. 今日这种说法听来荒唐 But two hundred years ago it didn't seem so unlikely. 但是两百年前还颇言之成理 It was widely believed that 当时一般人认为 the Earth was only a few thousand years old. 地球

发表于:2018-12-07 / 阅读(105) / 评论(0) 分类 太阳科普

The composition of the sun lies in this bar code. 这个条码说明了太阳的组成 All the thin lines are caused by tiny amounts of complex elements 这些细细的线条,都是微量复杂元素造成的 metals like iron and magnesium. 好比说

发表于:2018-12-07 / 阅读(121) / 评论(0) 分类 太阳科普

[00:01.02]A year later, [00:02.36]she found a note under her door from eddy, [00:05.01]telling her that she was still the best teacher [00:07.17]he ever had in his whole life. [00:09.74]But the story doesn't end there. [00:11.91]Twenty years went by

发表于:2018-12-13 / 阅读(194) / 评论(0) 分类 北师大版高中英语模块9(选修)

From NPR News in Washington, I'm Barbara Klein. The US Intelligence Community in Afghanistan has been sharply criticized by one of its own. Major General Michael Flynn, a Deputy Chief of Staff for Intelligence for the US and NATO in Afghanistan, says

发表于:2018-12-24 / 阅读(99) / 评论(0) 分类 2010年NPR美国国家公共电台1月

Enable to do sth. Beneficial--- by/from Criticize Shortcomings Human Resources prevent--- prevent from Device--- facility Recovery Know-how Expert Emphasis---imphases Be lack of = short of Factor--- e

发表于:2018-12-30 / 阅读(212) / 评论(0) 分类 自考英语(一)78讲

Science and Technolgy. 科技。 Modern alchemy. 现代炼金术。 Turning a line. 进入新的一行。 The race to extend the periodic table continues. 扩展元素周期表的比赛仍在继续。 ONE of the first inklings that chemistry has an u

发表于:2018-12-31 / 阅读(121) / 评论(0) 分类 经济学人科技系列

by Jason Marshall Weve spent the last few articles building our numerical vocabulary from the ground up. Today, were going to talk about something that sounds hard, but is actually pretty easy...and very useful too: the commutative property of additi

发表于:2019-01-02 / 阅读(171) / 评论(0) 分类 数学英语

As It Is - Remember Your Chemistry Classes? An international team of researchers recently reported creation of a new element that is 40 percent heavier than lead. The researchers successfully developed what they are calling Element Number 117 at a la

发表于:2019-01-03 / 阅读(104) / 评论(0) 分类 2014年VOA慢速英语(八)月

十二星座的学习能力大曝光 Aries 白羊座 (3月21日~4月20日) The fire element of Arise brings assertive I energy. 火相星座的特质使白羊座具有非常自信的自我力量。 TIPS: Your persistence will lead you to success. B

发表于:2019-01-03 / 阅读(111) / 评论(0) 分类 趣味英语

十二星座箴言 Aries 白羊座 (3月21日~4月20日) The fire element of Arise brings assertive I energy. 火相星座的特质使白羊座具有非常自信的自我力量。 TIPS: Your persistence will lead you to success. But your impulsive te

发表于:2019-01-03 / 阅读(120) / 评论(0) 分类 趣味英语

Aries 白羊座 (3月21日~4月20日) The fire element of Arise brings assertive I energy. 火相星座的特质使白羊座具有非常自信的自我力量。 TIPS: Your persistence will lead you to success. But your impulsive temper may cause prob

发表于:2019-01-03 / 阅读(85) / 评论(0) 分类 趣味英语

新春将近,老一辈的人总是在新的一年开始的时候根据生肖算一下自己来年的运气,而年轻人则会针对自己的星座测算一下新的一年里的运程。星座是西方人的传统性格分析学问,但你知道怎

发表于:2019-01-07 / 阅读(76) / 评论(0) 分类 英语日常口语

Refuel tempted to skip meals and pull late nights when you feel the heat at your work? Both could lead to burnout. Get six to eight hours of sleep and go to bed at the same hours every night. Aovid big meals but high-cabon, low-fat snacks every few h

发表于:2019-01-08 / 阅读(59) / 评论(0) 分类 实用英语

Refuel tempted to skip meals and pull late nights when you feel the heat at your work? Both could lead to burnout. Get six to eight hours of sleep and go to bed at the same hours every night. Aovid big meals but high-cabon, low-fat snacks every few h

发表于:2019-01-08 / 阅读(53) / 评论(0) 分类 英语美文

AS IT IS 2016-06-11 Four New Elements Added to Periodic Table 元素周期表新增四种元素 Four new chemical elements have been officially added to the periodic table. 四种新的化学元素被正式加入到元素周期表中。 The Internati

发表于:2019-01-12 / 阅读(86) / 评论(0) 分类 2016年VOA慢速英语(六)月

[0:0]efficiency效率,功效 [0:12.1950]elaborate elastic elbow elderly精心计划的,详尽的 橡皮图,松紧带 肘,肘部 较老的,年长的 [1:2.6076]elect electrical electron选举,推选 电的,电气科学的 电子 [1:41.1372]electronic elegant element elementary [2:36.2790]el

发表于:2019-01-16 / 阅读(172) / 评论(0) 分类 闭着眼睛飘单词 四级词汇

Ruth: So Akane, is there anything that youre frightened of? Akane: Well Im, Im really scared of horror movies. I never watch them, cuz they really really frighten me. Ruth: Horror movies wow. Have your ever seen a horror movie? Akane: Well, um, when

发表于:2019-01-30 / 阅读(63) / 评论(0) 分类 英语访谈对话

星座(Zodiac Sign)是占星学(astrology)中必不可少的组成部分之一,也是天上一群群的恒星组合(constellation)。 人们用星座来分析性格,每个星座都有特定的性格特征,小编帮你整理出来,可

发表于:2019-02-08 / 阅读(280) / 评论(0) 分类 英语口语

ARIES: 白羊座: The fire element of Arise brings assertive I energy. 火相星座的特质使白羊座具有非常自信的自我力量。 Tips:Your persistence will lead you to success. But your impulsive temper may cause problems. 学习相:坚持会

发表于:2019-02-09 / 阅读(67) / 评论(0) 分类 阅读空间

As you might expect, oxygen is our most abundant element, accounting for just under 50 percent of the Earth's crust, 你也许会想到,氧是最丰富的元素,占地壳的将近50%。 but after that the relative abundances are often surprising.

发表于:2019-02-25 / 阅读(60) / 评论(0) 分类 万物简史
学英语单词
'Itāb
Alcova
alumel alloy
American Chippendale furniture
analysis of loan and discount of banks
andis
asthma attacks
benefit societies
bit oriented data transmission
black-and-white symmetry
bocion
Bowers ridge
calliphorin
capitulations
capstan error
capsular swelling reaction
cefalu (cephaloedium)
central counterparty
centroid axis
Cheonjiyeon Falls
christian bibles
coliphonie
crimal organization
cystosepiment
dambac
dentil band
deprojecting
Encephalartos caffer
Engomer
environmental product
euhyponeuston
exciter time constant
extra track
faecal occult tests
fill shaft
finger like delta
furance process
generalize
golfballs
grab-bag
granogabbro porphyrite
GTID
half bow-knot
half-note
heel slab
high-voltage accelerator
hoist pump control rod
idfu (edfu)
imperonine
isophote
Kazaki
Kline
Layard, Sir Austen Henry
Levi decomposition
lexlata
linker-adaptor
London Blitz
Lonely I.
longitudinal analysis
lupala
make an inventory of warehouse
man-machine symbiosis
megaselia (aphiochaeta) agnata
metal powder cutting
mixing granulation
multiaperture core logic
murmurish
NGLs
non-procedural parallel processing language
notional amount
nulns
number check
obnoxiousness
observation system
ornament with
part purchase and part pooling
physcomitrium japonicum(hedw.)mitt.
Pinarbasi
placental Langhans
politropism
postflight inspection
power van
probasco
Prv.
purocellulose
put a premium on
repeated midpoint formula
schedulable
screen generator
secular determinant
shrabs
single-wire circuit
stochastic structural dynamics
sympathetic
Sérent
T-Z curve
toxic activation
troop-carrier
undiscriminated
unimuscular
wsda
yarn roll