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SSS 2011-08-12

This is Scientific Americans 60-Second Science. Im Sophie Bushwick. Got a Minute? What's the best way to find out if an unknown mixture contains a specific substance, like an environmental contaminant? You could use an expensive, bulky gas chromatogr

发表于:2019-01-08 / 阅读(115) / 评论(0)

Scientific American(八)月

WADA may change rules regarding clenbuterol

ROME, June 14 (Xinhua) -- World Anti-Doping Agency lab experts may change its rules regarding clenbuterol on their meeting next week. Clenbuterol is the drug that cyclist Alberto Contador tested positive for at last year's Tour de France. Contador bl

发表于:2019-02-06 / 阅读(113) / 评论(0)

英语新闻

净化室内空气选这些植物就对了！

Indoor air pollution is a common threat to human health, the new study looked at five common house plants and found that when it comes to removing harmful chemicals from the air, those five plants are better than others. 室内空气污染对人类健康

发表于:2019-02-07 / 阅读(122) / 评论(0)

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夏说英语新闻晨读第499期:兔子与绿萝杂交

本期内容： A humble houseplant with a dash of rabbit DNA could help lower our exposure to indoor air pollution, new research suggests. Scientists have revealed that by inserting a rabbit gene into devils ivy the plant is able to clean the surrou

发表于:2019-02-20 / 阅读(91) / 评论(0)

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学英语单词

(magnetic) disk

3-pyridinesulfonic acid

acidimetres

acknowledgement frame

air-to-ground laser range finder