音标:['dʒelsimain] ;
钩吻无定形碱
n. An alkaloid obtained from the yellow jasmine (Gelsemium
sempervirens), as a bitter white semicrystalline substance; -- called
also gelsemia.

This is Scientific American 60 second Science, I am Sophie Bushwick, got a minute~ Theyre called hydogels: Jell-O-like materials made of networks of long-chain molecules in water. And theyre as flexible as living tissue. But hydrogels could not recov

发表于:2019-01-08 / 阅读(238) / 评论(0) 分类 Scientific American(三)月

Smart Bandages to Heal Wounds More Quickly 智能绷带有助更快治愈伤口 Scientists say new made-made materials equipped with sensors could turn bandages into a valuable tool for health care workers. Simple bandages are usually seen as the fir

发表于:2019-01-12 / 阅读(417) / 评论(0) 分类 2016年VOA慢速英语(三)月
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imid
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