我自己裝了一個排氡氣係統，從sump pump井抽空氣

來源: smallCrab 於 2018-12-19 17:44:08 [舊帖] [給我悄悄話] 本文已被閱讀：次

然後采樣送實驗室一測，氡氣濃度隻有0.8

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