[建] 三级氢原子

A Century of Memories (1940-1949) On the first Sunday in December 1941, Americans were doing what Americans did on any normal Sunday.

发表于:2018-11-28 / 阅读(221) / 评论(0) 分类 疯狂英语2003年

Broadcast: February 14, 2003 By George Grow This is the VOA Special English Environment Report. President Bush has offered a plan to speed development of technology that uses hydrogen as fuel. His goa

发表于:2018-12-07 / 阅读(171) / 评论(0) 分类 VOA2003(上)-科技导航

雅思听力场景词汇:化学词汇 在雅思听力考试场景中,化学相关的场景的词汇较为生涩,平时生活中可能也运用得比较少,以下的词汇供大家参考喔。 molecule 分子 particle 粒子 ion 离子 particle

发表于:2018-12-19 / 阅读(186) / 评论(0) 分类 雅思英语

The Tertiary Education Commission (the TEC) announced the funding for polytechs and universities for the next 3 years. The TEC is the government organisation responsible for tertiary institutions like polytechs and universities so this is government

发表于:2018-12-31 / 阅读(147) / 评论(0) 分类 新西兰英语

Hyaluronic acid - the largest glycosaminoglycan known, it plays an important role of restricting the flow of water in tissues, particularly in synovial fluid where it acts as a lubricant.. Hydrogen bo

发表于:2019-01-03 / 阅读(112) / 评论(0) 分类 医务英语

Ecological balance - astable balance in the numbers of each species in an ecosystem. In the ecosystem of the mouth this balance is brought about by competition and cooperation between the different or

发表于:2019-01-03 / 阅读(159) / 评论(0) 分类 医务英语

Covalent bond - a strong bond between atoms formed by sharing outer electrons. When an atom has 8 outer electrons it is stable. Those which naturally have 8, like neon and argon gasses are quite unrea

发表于:2019-01-03 / 阅读(160) / 评论(0) 分类 医务英语

This is Scientific American's 60-second Science, I'm Steve Mirsky. Got a minute? Back on January 15th, US Airways Flight 1549 made that amazing water landing in the Hudson after both engines were taken out by Canada geese, which can weigh eight pound

发表于:2019-01-08 / 阅读(147) / 评论(0) 分类 Scientific American(六)月

We have multiplied our possessions, but reduced our values. We talk too much, love too little and lie too often. We've learned how to make a living, but not a life; we've added years to life, not life to years. We have taller buildings, but shorter t

发表于:2019-01-11 / 阅读(139) / 评论(0) 分类 阅读空间

South Africa University Students Ponder Future At the end of last year, about 350,000 Grade 12 students in South Africa passed their final exams. While some celebrated, others pondered their next move. In reality, a very small group of those who had

发表于:2019-01-14 / 阅读(125) / 评论(0) 分类 VOA标准英语2012年(二月)

(一)a is n times as small (light,slow,)as b. a is n times smaller (lighter, slower,) than b. 以上两句均应译为:a的大小(重量,速度,)是b的1/n[或a比b小(轻,慢,)(n-1)/n]. e.g. The hydrogen atom is near1y l6 times as

发表于:2019-01-17 / 阅读(134) / 评论(0) 分类 英语口译

英语中表示倍数减少的表达方法(一)a is n times as small (light,slow,)as b. a is n times smaller (lighter, slower,) than b. 以上两句均应译为:a的大小(重量,速度,)是b的1/n[或a比b小(轻,慢,)(n-1)/n]. e.g

发表于:2019-01-17 / 阅读(145) / 评论(0) 分类 英语口译

Fortunately more sober types were at work elsewhere. In 1808, a dour Quaker named John Dalton became the first person to intimate the nature of an atom (progress that will be discussed more completely a little further on), and in 1811 an Italian with

发表于:2019-01-29 / 阅读(123) / 评论(0) 分类 万物简史

The structure of atoms and the significance of protons will come in a following chapter, so for the moment all that is necessary is to appreciate the organizing principle: hydrogen has just one proton, and so it has an atomic number of one and comes

发表于:2019-01-29 / 阅读(129) / 评论(0) 分类 万物简史

Because the British were the most active in the early years, British names are predominant in the geological lexicon. Devonian is of course from the English county of Devon. Cambrian comes from the Roman name for Wales, while Ordovician and Silurian

发表于:2019-01-29 / 阅读(136) / 评论(0) 分类 万物简史

Back on January 15th, US Airways Flight 1549 made that amazing water landing in the Hudson after both engines were taken out by Canada geese, which can weigh eight pounds each. Now scientists have used forensic techniques to clear local geesethe per

发表于:2019-01-30 / 阅读(161) / 评论(0) 分类 60秒科学

俗话说:一母生九子,九子各不同。这句话在我邻居家孩子的身上体现得淋漓尽致。大女儿心灵手巧,做什么像什么;而二女儿却刚好相反,总是笨手笨脚。All thumbs就用来形容她这种笨手笨脚

发表于:2019-02-06 / 阅读(122) / 评论(0) 分类 实用英语

等外品 off-grade goods, rejects 邓小平外交思想 Deng Xiaoping's diplomatic thoughts 低调 low keyed (a metaphor for taking a cautious and slow approach) 第三产业 third/tertiary industry,

发表于:2019-02-08 / 阅读(122) / 评论(0) 分类 考研英语

They keep a Whale's Rib of an incredible length for a Miracle, 庙里把一根长得叫人不能置信的肋骨保存在那里, which lying upon the Ground with its convex part uppermost, makes an Arch, the Head of which cannot be reached by a Man

发表于:2019-02-17 / 阅读(138) / 评论(0) 分类 白鲸记

1.心事重重 some thing weighs heavily on ones mind The boss is quite down these days. He seems to have something weighing heavily on his mind. 老板这几天沉默寡言,看起来好像是心事重重的 2.苦苦哀求 press ones suit She press

发表于:2019-02-19 / 阅读(143) / 评论(0) 分类 英语口语
学英语单词
abdominal fissure
advanced through-the-lens flash metering
all-haillie
alleviated
allocation carry
annoyed
artillery airplane
blarney
blood glucose level
bloop hit
bobbeties
boniek
boues
canaea ryukyuensis
chamois wheel
co-range line
cold-rolled section
compiling
conductorship
could have fooled me
counting coil
cryoglobulinaemia
cuculus saturatus
cutrona
dark-brown long-winged bat
deformational eustatism
DLST
ducales
edmark
embarking
English pottery
equisetum palustres
ethmoid bone and tooth remover
exploit the particular advantages of each region
fashion designers
Ferrodickinsonite
field character set
flanged port
forge welding
gold sodium bromide
heat treatment regime
heyecun
holding down plate
imazodan
imperoline
intercrystalline barrier
iron chef
isobutyl cinnamate
koriyamas
like hot cakes
Liwonde
madane
mechanical measuring instrument
mechanical stepless speed change
Mentuhotep II
myokymias
nalmetrene
neocytheridies punctata
noneffectual
nonuniform distribution
omakase
Online proxy
optimum gradation
outgallop
pars calcaneonavicularis ligamenti bifurcati
policy sciences
pourpoints
puopulsion coefficient
pyrenum
quarrian
rachiss
Rizal
robado
rolling diameter
safety measures to fish catch
scientific understanding
selfrouting
shooe
single-disc
sliding eliminated gear
snakish
snow-plow car
sod plug cutter
stewardless
subscribe capital stock
subtracting
Supranol dye
tamber
tax-favoured
tennis club
the hut
threshold-logic network
tin-liquor
to put file in order
travel upon one's face
UIAC
umbrella wire
Vietnamese cinnamon
watchfire
white aspen
winch reductor
yorkhills