氟化钯(II) {二氟化钯}

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Beauty is only skin deep. And the beauty of shiny white teeth is even less deep. Because a new study shows that fluoride forms a thinner protective shiel

发表于:2018-12-02 / 阅读(155) / 评论(0) 分类 Scientific American(十二)月

(woman) Before starting our tour of Monticello, I'd like to give you some historical facts that might help you appreciate what you see today even more. Monticello was the very much loved home of Thomas Jefferson for over fifty years. Jefferson, who

发表于:2018-12-05 / 阅读(105) / 评论(0) 分类 托福听力短文

07 牙病的预防与治疗 DATE=2-27-01 TITLE=SCIENCE IN THE NEWS #2113 - (1)Dental Health BYLINE=Nancy Steinbach VOICE ONE: This is Sarah Long. VOICE TWO: And this is Bob Doughty with Science in the

发表于:2018-12-07 / 阅读(119) / 评论(0) 分类 科技之光

Is it necessary to have cavities in the baby teeth repaired? 乳牙蛀成了洞还有必要补上吗? If the baby teeth are going to fall out, I don't think that it matters if they become decayed. 如果乳牙是要脱落的,我想蛀了也没有关

发表于:2018-12-27 / 阅读(143) / 评论(0) 分类 口腔临床英语对话

Why is there is a long gap in your employment history? 为何你的工作经历中有一段很长的空白期? Between my first and second jobs,I decided to take a year off to travel around the world. 在第一份和第二份工作之间,我决定休

发表于:2018-12-31 / 阅读(150) / 评论(0) 分类 必背英文面试口语

A cluster of villages in China's Guizhou province has been plagued by an outbreak of disease that damages teeth and bones. Now, a new study by Chinese and American researchers puts the blame on polluted coal burned in home fireplaces. In small quanti

发表于:2019-01-14 / 阅读(124) / 评论(0) 分类 VOA标准英语2010年(十)月

Ah yes.The ol' fluoride rinse at the dentist. Not pleasant. But hey, good for your teeth, right? 没错,这是牙医洗牙用的含氟漱口水。确实够闹心的。但毕竟对你的牙齿有益不是吗? Well now materials scientists have been

发表于:2019-01-20 / 阅读(128) / 评论(0) 分类 2018年科学美国人1月

SCIENCE IN THE NEWS - November 26, 2002: Dental Health By Nancy Steinbach VOICE ONE: This is Steve Ember. VOICE TWO: And this is Bob Doughty with Science in the News, a VOA Special English program abo

发表于:2019-01-30 / 阅读(127) / 评论(0) 分类 科技之光

今天我们要学的词是 fluoride. Fluoride 氟化物。The U.S. government is lowering the recommended amount of fluoride added to drinking water for the first time in more than 50 years. 美国政府50多年来首次降低饮用水建议添加的氟

发表于:2019-02-02 / 阅读(119) / 评论(0) 分类 英语单词荟萃
学英语单词
a-block
accessary theme
acnitrazole
air mass shower
alkylamidase
as the story runs
association theories
Audubon, John James
be disheartened
beachhead
beta sp
bleached bees wax
bond end
borrowed current fund
carbon packing
carburizing depth
centroidal
cigarette burns
comiso
cone of eruption
cryogenic delivery pipe
current-carrying shaft
cytochrome cell
directed beam scan
dispersants
Economist's
electromagnetic measurement
elimination of error
engine change-over
english-as-a-second
even-numbered error
expansion factor
exploration period
fibrae suspensoriae
fit model
fog deposit
Fraxinus Americana
free and equal
front desk
gas field gathering process
haemometer
intermediate coronary syndrome
International Frequency Tables
inversed grafting
Ipyong-dong
juli
jumbi
Kochia iranica
Kuril-Kamchatka Trench
leporids
lithographic process
log body
Lommel integral
main engine trouble
major ride
MERIT Network
microphthalmias
mold of seed
Montenegrine
multiportion
Musculus rectus capitis anterior
muzzing
noninstantaneous
nonmusic
Nunggum-do
nursing interventions
open loop response
opsiometers
Parnassia dilatata
phonetic image
phytomyza valida
positive closing
practice pad
precisionist
pumping station for irrigation and drainage
Raman spectra
re-forestations
real-time concurrent process
resilient seal valve
root treatment
setline
shozz
simulator software package
SPDIF
squeezing into
stationary elevating work platform
Stereospondyly
street names
subimbibitional
subsensitivety
sympathetic nerve
the small end of the wedge
tipped back
Trucial Cst.
two-way drive
twopenny nail
ultramicrofine
vaginae synovialis trochleae
vastus
vertical collimator
yolk skin
zymotic efficiency of soil