[化] 季铵化合物; 四级铵化合物
词型变化:名词复数形式 : quaternary ammonium compounds

In business, Optus has called for Telstra's proposals on its participation in the national broadband network to be blocked. Optus' chief executive Paul O'Sullivan says Telstra's current plan for the separation of its retail and wholesale arms wholesa

发表于:2018-12-11 / 阅读(78) / 评论(0) 分类 澳洲ABC新闻快递2011年

What do these five words have in common: hotdog, fireworks, well-being, waistline, sunset and ice cream? They could all describe a fun holiday celebration. For example: My holiday was wonderful! I went to a friends party and we laughed, ate and had a

发表于:2019-01-21 / 阅读(117) / 评论(0) 分类 2018年VOA慢速英语(十二)月

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(49) / 评论(0) 分类 万物简史

By Elizabeth Carlassare. Todays topic is compound interest. Albert Einstein is often quoted as having said something to the effect that compound interest is the greatest wonder of the universe. Its an urban legend, but it packs some punch! In todays

发表于:2019-01-30 / 阅读(109) / 评论(0) 分类 货币英语

AGRICULTURE REPORT – March 12, 2002: Carbon Dioxide and Crops By George Grow This is the VOA Special English AGRICULTURE REPORT. Increasing levels of carbon dioxide gas in Earth’s atmosphere have

发表于:2019-01-30 / 阅读(71) / 评论(0) 分类 农业与发展

ISLAMABAD, Feb. 25 (Xinhua) -- The living compound of the former al-Qaida chief Osama bin Laden in Pakistan's northwest city of Abbottabad is being demolished, said one local media report. Local Urdu TV channel Express said that the front part of bin

发表于:2019-02-18 / 阅读(58) / 评论(0) 分类 英语新闻
学英语单词
acoustic grating
arm's-length deal
asynchronous terminal status word
audible alarm
auto-search
barrier synchronization
benevolent-authoritative
borehole-pump
carboxyltransferases
cell cohomology group
chrysanthemate
Ci.Cas.
commodity inspection mark
commonly-helds
computer typesetting
contour sawing
cost per bit
crystal fracture type
DBPH
dimuon event
dream land
dual-layer
elementary necessaries
equity title
erythema streptogenes
Estrostep
eurybathic, eurybenthic
exterior hash function expression
fauness
femidoms
flour gold
frater consanguineus
fungimycin
getting
halq al wadi
hand-guns
heir of his body
histamine azoprotein
interference far field pattern
isabellin
ivorywood
javanica
Kasatori-yama
ketocaine
LASEK
leukosarcoma
liberal parties
Liquidity Ratios
Little River County
lock filling
loony
mckaig
memory coherence
meter key
milkmaids' dance (england)
Mφlmen
nephric ducts
nonsuppressible insulinlike activity
Osteoglossinae
Packet sniffer
palpometers
perlon
plug drawing draft
plumb stern
POJ
position location system
positive ion mobility
procard
proofing sheeting
quarrel with
rectal actinomycosis
Remo, Pta.
resoled
rinsing trough
rock technique
schold
session support command
sheet iron strip
shitlist
signature generation authority
single flight conveyor belt
sit-and-reach
solar radius
split-ring
stability against crushing
steamboatman
sub joint
subsurface drainage basin
suited and booted
symoblize
Tambea
the beautiful game
three-moment equation
tochas
transwoman
twist plane
types of economic results
vacuum-tube detector
vitrofusain
watch spring
wing profile
yaffingales