[化] 硫酸铯铝

[00:06.37]The United States has a new official clock. [00:10.95]The clock began operating late last year in the American city of Boulder,Colorado. [00:18.39]Experts say the new clock is so exact that it will neither gain nor lose so much as one secon

发表于:2018-12-26 / 阅读(39) / 评论(0) 分类 美国英语听力80篇

The aluminium smelter at Tiwai Point near Invercargill opened in 1971. It had a contract to buy cheap electricity, generated by hydro-electricity from Lake Manapouri which is not far away. Now in 2013, 13% of all electricity generated in New Zealand,

发表于:2018-12-31 / 阅读(61) / 评论(0) 分类 新西兰英语

Youve given some thought to oxygen, carbon, uranium. But youve probably never mused about the element ytterbium, symbol Yb. A new study by scientists at the National Institute of Standards and Technology, or NIST, says that ytterbium could find a rol

发表于:2019-01-08 / 阅读(49) / 评论(0) 分类 Scientific American(八)月

Protamine sulfate is a drug that reverses the anticoagulant effects of liver compounds such as heparin. Protamine is extracted from the sperm of salmon and other species of fish, and then made into a protamine sulfate injection which is a necessary d

发表于:2019-01-19 / 阅读(68) / 评论(0) 分类 世界各地新闻集锦

We keep pumping carbon dioxide into the atmosphere and the earth keeps warming. Climate scientists have predicted that the consequences of unchecked warming could result in everything from catastrophic flooding to larger and more deadly hurricanes. S

发表于:2019-02-23 / 阅读(53) / 评论(0) 分类 英语时差8,16

First off, I'll mention that at the bottom of the sea there exist veins of zinc, iron, silver, and gold whose mining would quite certainly be feasible. 首先,我对您说,海底有锌、铁、银、金等矿藏,开发并不是不可能的事。

发表于:2019-02-25 / 阅读(120) / 评论(0) 分类 《海底两万里》中英双语有声读物
学英语单词
.rgb
a.a.gun
affect ignorance
all-dielectric interference filter
allenstein
American phobia
antifreezing of underground mine
aristolochiae lignum
as regular as clockwork
assignor
Asynchronous time division multiplexing
automatic memory
be at the pains
behavioral assessment
belleza
bronchial lymph nodes
cairnlike
century break
characteristics of demand
chimonbambusa marmorea mak.
cie standard color imetric system
crinophagy
deviation intelligence quotient
diaphragm sealed displacement transmitter
diskett
Double hop.
dream analysis
Dunkur
eckington
ethyl phenylhydrazine
euonymol
final address
fluoroplumbate
further crop
goldfishing
government purchase multiplier
grewias
group of similarity transformations
habatsu
hack on
halogenide
holluschickie
Hyper-rhinolalia
import merchant
in a dead hand
indentings
jargonium
Khouribga
Kogalym
Kosyakinskaya
lacertinus
light antenna
limit thread gauge
lipromima minuta
local flight
log circular saw
machairodont
membrane osmometer
name plate of manufacturing plant
Napier deltaic two stroke engine
neotanshinone
new-comers
nonessential region
number node
oleum sardine
osteotomy-osteoclasis
otsuki
outside manufacture
pan conveyer
papilloedemas
paravirtualisation
pasment
physical chemistry of high polymers
preemption service
profit-and-loss
protogenoi
radar horizon
recrimination
respondent response
Rhaetidia
saint olavs
sampling experiment
satellite-based augmentation system
SD (standard deviation)
seamless steel tubes for boiler
segmented model test
selfsimilarity
silica rock
Sir Edwin Landseer Luytens
soft rot of cabbage
sonvelograph
special offers
sporadoneure
standard file maintenance utility program
streptococcus equismilis
tensioning nut
three-inches
tool spindle mechanism
Trochus pyramis
unpaved road
witzchouras
ygl