确认减轻氡对健康影响的有效战略。
Identify effective strategies for reducing the health impact of radon.
避免氡从地下室进入生活用房。
Avoiding the passage of radon from the basement into living rooms.
可通过以下方法降低家中的氡水平
氡有放射性，是有害物质。
氡引起的多数肺癌病例发生在吸烟者中。
Most of the radon-induced lung cancer cases occur among smokers.
在全球，氡每年可造成数万例肺癌死亡。
On a global level, tens of thousands of lung cancer deaths annually can be attributed to radon.
在地下室安装氡蓄贮系统。
鉴于在空气中的稀释，室外的氡水平通常很低。
Due to dilution in the air, outdoor radon levels are usually very low.
应采用建筑规范，在住宅建筑中减少氡的水平。
Building codes should be implemented to reduce radon levels in homes under construction.
氡来自镭的衰变。
中国、俄罗斯和美国的科学家测量地下水的氡含量。
Scientists in China, Russia, and the United States measure radon in ground water.
在接触高水平氡的铀矿工人中观察到显著的健康影响。
Significant health effects have been seen in uranium miners who are exposed to high levels of radon.
对多数人而言，接触的大部分氡来自家中。
For most people, the greatest exposure to radon comes from the home. The concentration of radon in a home depends on.
当增加氡换气扇时，可进一步降低氡的水平。
When radon ventilation fans are added radon levels can even be reduced further.
氡和石棉。
氡引起肺癌的比率估计范围为3 - 14%。
The proportion of lung cancers attributable to radon is estimated to range from 3 to 14%.
饮用水中也可找到氡，浓度取决于水源，有时可造成危害。
Radon can also be found in drinking water, the concentration depending on the water source, and this can sometimes present a hazard.
氡水平在地下室、地窖或与泥土接触的其它结构区通常较高。
Radon levels are usually higher in basements, cellars or other structural areas in contact with soil.
氡是一种自然产生的放射性惰性气体，它无色、无味、无臭。
Radon is a chemically inert, naturally occurring radioactive gas without odour, colour or taste.
氡是一种天然产生的放射性惰性气体，它无色、无味、无臭。
Radon is a chemically inert, naturally occurring radioactive gas. It has no smell, colour or taste.
在吸烟并接触相同浓度氡的人中，肺癌风险大约要高25倍。
Among those who smoke and are exposed to the same radon concentration, the risk of lung cancer is about 25 times greater.
氡浓度每升高100Bq/m3，肺癌风险就增加16%。
The risk of lung cancer increases by 16% per 100 Bq/m3 increase in radon concentration.
无源的缓解系统已显示有能力使室内氡的水平降低多达50%。
Passive systems of mitigation have been shown to be capable of reducing indoor radon levels by up to 50%.
EPA已经注意到每年来自于房屋氡飙升致肺癌的数千份案例。
EPA has noted that several thousand cases per year of lung cancer come from elevated levels of radon in homes.
这些水源通常比河流、湖泊和小溪的地表水具有高得多的氡浓度。
These sources of water normally have much higher concentrations of radon than surface water from rivers, lakes and streams.
氡是一种天然的放射性气体，在美国某些地区浓度高于平均水平。
Radon is a natural radioactive gas that occurs at higher than normal levels in certain parts of the U.S..
氡更有可能使吸烟者罹患肺癌，而且是非吸烟者中肺癌的主要病因。
Radon is much more likely to cause lung cancer in people who smoke, and is the primary cause of lung cancer among non-smokers.
在总体上，减少氡接触对实现优质室内空气的目标具有很重要的作用。
Overall, reducing radon exposure is an important contribution to the goal of good quality indoor air.
但基于相对论进行的计算表明，它更像一种独特元素、惰性(非金属)气体氡。
But some relativistic calculations suggested it might actually behave like a different element, the inert (and non-metallic) gas, radon.
室内的氡水平较高，而矿山、岩洞和水处理设施等地方的氡水平最高。
Indoors, radon levels are higher, with highest levels found in places such as mines, caves and water treatment facilities.
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