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53.问:现在国内外十分重视室内空气中氡的控制,这是怎么一回事? 答:氡(Rn)是一种放射性气体,它较广泛存在于土壤、岩石、以它们为原料而制成的材料和地下水中,当建筑物中包含有以上这些东西或其邻近环境中有这些东西时,氡就会通过各种途径散布到室内空气中。通过呼吸作用氧被吸入和
53. Q: So far there is a great deal of attention paid to the control of radon in the indoor air both at home and abroad. Answer: Radon (Rn) is a radioactive gas that is more widespread in soils and rocks and is made from them In materials and groundwater, radon disperses into indoor air in a variety of ways as the building contains these things or in its immediate surroundings. Oxygen is inhaled and breathed through the breath