单词：trixylyltin fluoride
单词：trixylyltin fluoride 相关文章
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
Scientific American(十二)月
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
科技之光
if you feel my loveblaxy girls Blaxy Girls，这由漂亮美眉组成的年轻摇滚乐队来自罗马尼亚。成员分别为：Rucsy - 主音/吉他，Amalia - 吉他，Cristina - 贝斯，Gela - 鼓手，Ana-Maria - 键盘。 If You Feel My Love中英
春天听的英文歌曲
London Olympics Legacy Difficult to Quantify London Olympics organizers say along with a short-term economic boost and new sports facilities, the Games will leave a legacy in Britain of increased participation in sports and an improvement in public h
VOA标准英语2012年(七月)
Todd: So, Jeyong, you like to go to night clubs. (Yes) OK. When you go to a night club, what do kids wear these days? Like what makes you look cool in a night club or how should you dress? Jeyong: These days being sexy is what kids prefer, and by say
原版英语对话1000个
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
口腔临床英语对话
Xylitol is a wood sugar that I've been using for a few years. It has many benefits. A dentist friend(1) told me that because its molecular structure(2) is different to normal sugar, plaque bacteria cannot absorb it; they try to, but they can't. Becau
英语博客 A cup of English
86 去痛片须慎用 DATE=8-16-01 TITLE=SCIENCE REPORT - OxyContin Warning BYLINE=Jerilyn Watson （Start at 1'02
科技之光
歌曲： If You Feel My Love 艺人： Blaxy Girls 音乐星级： ★★★★★ 所属专辑： If You Feel My Love 发行年代： 2008 风格： Pop Rock 介绍： Blaxy Girls，这由漂亮美眉组成的年轻摇滚乐队来自罗马尼亚。成员分别为：Rucsy - 主音/吉他,Amalia - 吉他,Cristina -
音乐咖啡厅
Demand for memory chips and flat screens for televisions and phones has given Samsung Electronics its best quarterly profits in three years. 对内存芯片以及电视、手机的平面显示器的需求，已经使三星电子公司获得了三年来
英语新闻
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
VOA标准英语2010年(十)月
Girl, I believe you can fly, 'cause you got those angel wings, You know just what I mean, And plus the voice you sing, Can save a life, My baby's on the scene, Some hurting to me, She's my everything, I can't deny, I love her more everyday, And I got
节奏布鲁斯
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
2018年科学美国人1月
Black Hole Quasar Building Galaxy A study in the journal Astronomy Astrophysics finds that a distant quasar, powered by a black hole, is building a galaxy that will eventually surround the black hole. Cynthia Graber reports Which came first, black ho
60秒科学
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
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
英语单词荟萃
SEOUL, May 4 (Xinhua) -- Samsung Electronics, the world's largest mobile phone maker, said Friday that it unveiled its third generation smartphone in the Galaxy series featuring the options of recognizing voice, face and motion. The Galaxy S3, runnin
英语新闻
英文歌词: I'm bringin' sexy back Them other boys they don't know how to act I think it's special... what's behind your back So turn around and and I'll pick up the slack (Take it to the bridge) Dirty Babe You see these shackles baby I'm your slave I
音乐咖啡厅
X Xerox/xerox n.复印机 v.复印 X-ray n.X射线,X光 Y yard n.院子,场地;码 yawn v.打呵欠 n.呵欠 year n.年,年度 yearly a./ad.每年,一年一度(的) yeast n.酵母 yell v.叫喊 yellow
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