[陶瓷] 铌酸盐系压电陶瓷

60秒科学:用身体动作来充电电池植入的医疗设备

最新研制一种新的医疗设备，可以利用身体动作来充电。 Novel materials could allow the implantation of flexible, rechargeable batteries that would constantly recharge from the body's own movements--even just breathing. Cynthia Gr

发表于:2018-12-07 / 阅读(84) / 评论(0)

60秒科学

SSS 2010-09-24

This is Scientific Americans 60 Science, Im Cynthia Graber. Thisll just take a minute. Batteries add weight, and they need recharging. Thats serious business for implanted medical devices. When the batteries die, patients sometimes have to undergo an

发表于:2018-12-24 / 阅读(34) / 评论(0)

Scientific American(九)月

可以录音和发声的衣服(有声)

M.I.T. researchers have developed a piezoelectric fiber that would react to electric currents and have the potential to record or produce audio. Clothing is so yesterday. I mean, really, what can it do? It cant pick up sound, or beep at us if somethi

发表于:2019-01-02 / 阅读(52) / 评论(0)

60秒科学

Ceramic1 Water Purifier2

Broadcast: May 5, 2003 By Jill Moss This is the VOA Special English Development Report. Each year more than two-million people die from diseases caused by drinking dirty water. That is the estimate of

发表于:2019-01-04 / 阅读(77) / 评论(0)

VOA2003（上）-社会广角

外媒看中国魅族M1 Note=山寨爱疯5c

While many Chinese smartphone makers have recently stepped up their efforts in delivering more original designs, we can't say that's the case with Meizu's latest offering. In fact, we already knew the cheeky company was up to something when the Chine

发表于:2019-02-04 / 阅读(227) / 评论(0)

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感受英语的形态美

一、对称美：对称是将两种相斥相异或相关的事物加以并列对称地建构而产生的视象。英语的对称美表现在句式的搭配上，它所显示出的平衡，不论是在视觉上，还是在语感上，都给人以和谐

发表于:2019-02-13 / 阅读(64) / 评论(0)

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