单词：chitinoid
adj. 类几丁质的；似几丁质的
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material scientists admire spider silk for being lightweight and strong.now another arthropod product is getting into the act insect cuticle,the tough flexible material is inside insect skeleton.researchers at harvard * institute for biological inspi
发表于:2018-12-02 / 阅读(123) / 评论(0)
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This is scientific American sixty seconds science. I'm Christopher Intagliata. Got a minute? Worldwide, we know of enough uranium to power today's nuclear reactors for another hundred years according to the nuclear energy agency. But scientists say t
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By June Soh Washington, D.C. 17 October 2006 watch Youngest Imam report Two teenagers who used to spend their time playing computer games after school are suddenly finding themselves as spiritual leaders. Their role relieves a U.S. Muslim community'
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2006年VOA标准英语（十月）
2006年VOA标准英语（十月）