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This is Scientific American's 60-Second Science. I'm Cynthia Graber. Thisll just take a minute. Bisphenol A. Also called BPA, it's used to make shatter-proof plastic known as polycarbonate, found in everything from water bottles to medical devices to
发表于:2019-01-08 / 阅读(67) / 评论(0)
Scientific American(五)月
Scientific American(五)月