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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
60秒科学
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
Scientific American(九)月
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
60秒科学
Being a monitor is my dream, because I think it is so cool and I will have the power. So when I go into the middle school, I make my effort to be a monitor, luckily, all of my classmates trust me and elect me as their monitor. I am so happy, my littl
英语作文
TOKYO, March 11 (Xinhua) -- Japan and the United States on Monday held their first meeting of the Comprehensive Dialogue on Space and agreed to cooperate in monitoring ships from space, local media report. In a joint statement after the meeting, the
英语新闻
MEXICO CITY, May 18 (Xinhua) -- The Mexican government signed an agreement with the non-governmental group TRAFFIC on Tuesday to exchange information about illegal seizures of flora and fauna species in Mexico. The agreement with the wildlife trade m
英语新闻