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这个东西是致癌物,可能就在你身边,增加肺癌风险 ...
作者: 美国国家癌症研究所(NCI)一、什么是铬,什么是六价铬化合物?铬(chromium)是一种无嗅无味的金属元素,存在于地壳中,也存在于空气、水 ...
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