单词:dimethyl-p-phenylenediamine acetaldoxime
单词:dimethyl-p-phenylenediamine acetaldoxime 相关文章
Agriculture Report - Friends With Benefits, in the Plant World This is the VOA Special English Agriculture Report. Companion planting is the idea that some kinds of plants can help each other grow. Plants that are compatible together generally have s
Many of the Burgess specimens have now been assigned to living phyla just where Walcott put them in the first place. 许多布尔吉斯标本现在已经归到活着的动物的门里就是沃尔科特最初放置它们的地方。 Hallucigenia and s
This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? To keep your car purring, you have to change the oil. Such maintenance produces eight billion gallons of used motor oil annually. Some waste oil does get re-refined to pro
Fun Fact: Alligators Can Regrow Teeth 有趣的事实:短嘴鳄可以再长牙齿 Fun fact about alligators: they can regrow any of their eighty teeth up to fifty times. Which is pretty impressive, especially compared to us relatively dentally chal
Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文,请发贴到 听力原文收集区 ,您将会获得10到30积分的奖励! Thank you!
its time again for the A Moment of Science mailbag. A listener writes: Dear A Moment of Science, Ive always been fascinated by volcanoes. So I was wondering: How well can scientists predict when and where a volcano will erupt? Intersting question. Th
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头孢菌素类 第二代 头孢呋辛钠 Cefuroxime Sodium 头孢呋肟,赐福乐信,舒贝洛,西力欣,特力欣,明可欣,CXM,Zinacef,Monacef,Ketocef,Furex Kesiut,Supero 头孢
By Phuong Tran Dakar 09 April 2007 According to most poverty indicators, almost half the population of Sub-Saharan Africa is living on less than $1 a day. One Senegalese food stand owner shows how far a dollar goes in this part of the world. Her alum
This is Scientific American's 60-Second Science. I am Steve Mirsky.Got a minute? Talk about your vicious cycles. A new study finds that belly fat could be making you hungrier. Which would lead to more belly fat. The research was performed at the Univ
Algae seem harmless enough. These precursors to plants thrive throughout the world's waters. But these single-celled plants have global consequences. We can thank them for oxygen in the atmosphere, oil in the lithosphere as well as dead zones in the
By Barry Wood Washington, DC 08 January 2007 watch Balkan Pipeline report Map of Balkan pipelines A race is underway in the Balkans to build an oil export pipeline that bypasses the Turkish Straits. One proposed line would go from Bulgaria to Albani
Scientists have identified a unique genetic mutation in about 10 percent of people with type 2 diabetes(糖尿病) studied in the United States and Europe. The discovery could help some people learn if they are at risk of developing diabetes so they
By Brian Wagner 28 May 2007 Venezuela's government has taken control of a private television station after a midnight deadline for the station to stop broadcasting. In Caracas, VOA's Brian Wagner reports that officials are using the station's frequen
By Dan Robinson Capitol Hill 20 March 2007 Democrats in the House of Representatives face uncertainty as they proceed with plans to bring legislation to the floor later this week to fund the wars in Iraq and Afghanistan and provide billions in domes
By Parke Brewer Berlin 10 July 2006 Italy is the 2006 World Cup football champion after defeating France in a penalty kick shootout, 5-3. Italian defender, capitan Fabio Cannavaro, surrounded by teammates, holds up World Cup trophy They played with
By Parke Brewer Berlin 08 July 2006 Few would have thought the French could make it to the final here, after they played to draws in their two opening group matches, and were at risk of bowing out of the tournament until a 2-0 win over Togo. ----- F
1) head to head / toe to toe 直面对战 2) face to face 面对面 3) see eye to eye 意见相同
WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo