radon

美 [ˈreɪdɑn]英 [ˈreɪdɒn]
  • n.氡(放射性化学元素)
  • 网络氡气;镭射气;拉东

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radon

n.

相对原子质量_百度百科 ... astatine* 砹 radon* francium* 钫 ...

氡气

  氡气Radon),是存在于大自然中的有害气体,因为含有放射线,所以估计在美国有26%的肺癌是它所引起的。到底氡气是 …

镭射气

英语词汇分类(1) - linglong的日志 - 网易博客 ... helium 氦 radon 镭射气,氡 graphite 石墨 ...

拉东

普通高中数学课程标准(实验) ... 柯西 Cauchy 拉东 Radon 拉格朗日 Lagrange ...

放射性惰性气体氡

原子物理学家卢瑟福(1871—1937)发现他所说的镭射气、钍射气,即放射性惰性气体氡(Radon)。不久德国的唐恩(1848—?)也 …

放射性氡

 衰变时产生放射性氡Radon)之气体 有太高的光子能量54 下列何者类似软组织材料,可用来减小最大剂量深度?

拉冬

2.1 拉冬(RADON)变换和拉冬逆变换的基本原理28-30 2.2 电容层析成像系统构成30 2.3 电容测量电路30 2.4 电容层析成像正问 …

放射性元素氡

...)的污染 2-8 室内燃烧物及油烟的污染 2-9 放射性元素氡(Radon)的污染 参考文献 第二章 习题 第三章 危害健康的材料与设备 …

1
All that remained was to see whether this energy release more resembled that of gold reacting with mercury or with radon. 接下来要弄清的问题就是,释放的能量是否与金汞或金氡反应时释放的能量相同。
2
Passive systems of mitigation have been shown to be capable of reducing indoor radon levels by up to 50%. 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%。
3
The house contained so much radon that living in it for a year was like being exposed to 260, 000 chest X-rays. 房子里有许多氡(元素),以至于住在里面一年就相当于做(拍)了260,000次胸透(即拍x光)一样。
4
Radon is a chemically inert, naturally occurring radioactive gas. It has no smell, 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。
5
Radon is a natural radioactive gas that occurs at higher than normal levels in certain parts of the U. S. 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。
6
Chinese and Russian scientists have reported that in places where stress is building up, the radon levels of the water build up too. 中国和俄罗斯报告说压力增加的地方,水中氡的含量也会增加。
7
Ventilation has been proved to be a main method to eliminate radon and its daughters in uranium mines. 通风是排除铀矿井空气中的氡及其子体的主要方法。
8
Natural surface water supplies generally carry little threat of human radiation contamination because radon volatilizes into the atmosphere. 天然的地上水供应一般带有极少的对人类有危险的放射性污染物。
9
Regular radon activity concentration and effective dose measurements inside the great pyramid with passive nuclear track detectors. 用无源核径迹探测器进行大金字塔中常规的氡放射性浓度和有效剂量测量…[中国核科技信息与经济研究院]。
10
Overall, reducing radon exposure is an important contribution to the goal of good quality indoor air. 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。
11
But some relativistic calculations suggested it might actually behave like a different element, the inert (and non-metallic) gas, radon. 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。
12
Radon levels are usually higher in basements, cellars or other structural areas in contact with soil. 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。
13
On a global level, tens of thousands of lung cancer deaths annually can be attributed to radon. 在全球,氡每年可造成数万例肺癌死亡。
14
Domestic radon risks may be dominated by bystander effects-but the risks are unlikely to be greater than we thought. 通过在场人影响家庭氡气危害可以被控制-但该危害不大可能比我们设想的要大…[中国核科技信息与经济研究院]。
15
Third, the children not to use natural stone, such as marble and granite, which is causing the main reason for indoor radon contamination. 第三,儿童房不要使用天然石材,如大理石和花岗岩,它们是造成室内氡污染的主要原因。
16
Radon escapes easily from the ground into the air, where it disintegrates through short-lived decay products called radon progeny. 氡很容易从地下释放到空气中并通过称为氡子核的短命衰变产物分解。
17
Radon gas in the air is present worldwide, its concentration depending on the highly variable uranium content of the soil. 在世界各地,空气中都存在氡气,其浓度取决于土壤中差别极大的铀含量。
18
Radon can be transported from deep earth to ground surface and carry information reflecting the underground geological status. 氡能从地下深部运移到地表,可带来反映地下地质状态的信息。
19
United States scientists have also placed radon monitoring stations in earthquake zones, particularly California. 美国科学家也在地震区,特别是加利福尼亚,设置了检测站。
20
In addition, reference is made to the novel techniques of the determination of radon and its daughter products in the atmosphere. 此外,还介绍了一些新方法,例如测量大气中的氡及其衰变产物。
21
Radon is much more likely to cause lung cancer in people who smoke, and is the primary cause of lung cancer among non-smokers. 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。
22
Water vapor , temperature , and radon and their fluxes in an idealized equilibrium boundary layer over land CO. 水汽,温度,和氡之间的耦合以及它们在地面上理想化的平衡边界层中的流通量。
23
Relevant information of geohydrologic environment and radon hot spring was collected and analyzed comprehensively and systematics. 收集、整理峨眉山地理环境、氡温泉等有关资料,全面系统地调查分析。
24
Scientists speculate that the amount of radon increases in the ground when rocks layers shift, exposing new rocks , and thus more radon. 科学家推测,当岩层位移时,露出新岩石,地下氡的含量会增加,因此就产生更多的氡。
25
The correlation of radon and mercury is not good, because neither of their variance and mean consistency passed test. 氡和汞相关性较差,方差和均值一致性检验均未通过。
26
The internal dose from radon exposure can be directly and more accurately evaluated with the measurements by the device. 利用该装置的测量结果可直接且较为准确地评价氡暴露所致人体内照射剂量。
27
Passive inhalation ( "secondhand smoke" ) is linked to lung cancer in nonsmokers. Other risk factors include exposure to radon or asbestos. 在不抽烟的人当中,被动吸烟的人也与肺癌发病有关。其它的致癌因素还包括曝露在氡和石绵的环境下。
28
A mathematic model about the regulation of accumulation of radon in a living house is founded and primarily testified by experiment. 建立了居室中氡量积累规律的数学模型,并对其进行了初步的实验验证。
29
Radon can also be found in drinking water, the concentration depending on the water source, and this can sometimes present a hazard. 饮用水中也可找到氡,浓度取决于水源,有时可造成危害。
30
Radon safety should be considered when new houses are built, particularly in high radon areas. 在建造新房屋时,尤其是在氡含量较高的地区,应考虑到氡安全问题。