单词：osmium(viii) fluoride
单词：osmium(viii) 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
Henry VIII 亨利八世 When the eighteen-year-old Henry VIII became King of England, he was extremely popular,for he had all the qualities that his people admired. 当十八岁的亨利八世成为英格兰国王的时候，他非常受欢迎，因为
世界名人故事之政界精英
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
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
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
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
文本： Henry VIII's love of riding bordered on the obsessional. Before he became so grossly fat, he would ride seven days a week, wear out eight horses in a day. So he decided to turn the land north of Westminster into his own private royal huntin
跟着英剧练发音
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
I, 1 II, 2 III, 3 IV, 4 V, 5 VI, 6 VII, 7 VIII, 8 IX, 9 X, 10 XI, 11 XII, 12 XIII, 13 XIV, 14 XV, 15 XVI, 16 XVII, 17 XVIII, 18 XIX, 19 XX, 20 XXI, 21 XXII, 22 XXV, 25 XXIX, 29 XXX, 30 XXXI, 31 XXXIV,
英文语法词汇
BEIJING, Sept. 28 (Xinhuanet) -- The unmanned Shenzhou VIII, part of China's first spacecraft rendezvous and docking mission, will be launched in early November. Niu Hongguang, deputy commander-in-chief of the program, said on Tuesday the launch has
英语新闻
In 1509 Henry VIII ascended the throne.He would be King of England until his death. Author Alison Weir wrote the book, Henry VIII: The King and Court and here are some extracts from it. Henry VIII succeeded to the throne in 1509 to great acclaim. He
英语听力文摘 English Digest
单词的记忆将不在是一件困难和痛苦的事情, 你会发现你的单词量在一段时间内暴涨,一种强烈的满足感油然而生,另外, 背单词的时候不要只见树木不见森林, 比如说, 你知道了词根liter表示文字
大学四六级阅读
Henry VIII 亨利八世 When the eighteen-year-old Henry VIII became King of England, he was extremely popular, for he had all the qualities that his people admired. 当十八岁的亨利八世成为英格兰国王的时候，他非常受欢迎，因为
名人认知系列 Who Was
In 1509 Henry VIII ascended the throne.He would be King of England until his death. Author Alison Weir wrote the book, Henry VIII: The King and Court and here are some extracts from it. Henry VIII succeeded to the throne in 1509 to great acclaim. He
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