氡气是一种无色无味,比空气略重的放射性气体,它来自地球土壤里的放射性元素铀和镭,经常通过地下室的各种缝隙和管道进入我们的屋内。如果氡气不能及时排出屋外,那么人就会长期生活在氡气的环境中。氡气被人吸入肺 ...
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