[电子] 阴极电子学

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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Batteries of the future need to deliver more energy, and they need to be smaller. Researchers at MIT think they have developed a technology that can, a

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This is the VOA Special English Economics Report. This year's Consumer Electronics Show opened Thursday in Las Vegas. The event is the world's biggest technology trade show. More than three hundred companies are presenting more than twenty thousand n

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