background radiation

1. The committee said the detected levels of radioactive iodine-131 were below one-hundred-thousandth of natural background radiation and not considered harmful.
   委员会称此次检测到的碘-131辐射量小于天然本底辐射剂量的十万分之一，不会对公众造成伤害。
2. The Emergencies Ministry described Friday's events as a meteor shower in the form of fireballs and said background radiation levels were normal. It urged residents not to panic.
   该国紧急事务部称该事件是流星雨形状似火球，并表示辐射值属正常，同时敦促居民不用恐慌。
3. Even fifteen billion years or so after the Big Bang, echoes of that event still linger in the form of background radiation, only a few degrees above absolute zero.
   即使在宇宙大爆炸的一百五十亿年后，其反射仍以背景辐射的形式，略略徘徊于绝对零度之上。
4. Your thymus deteriorated because of the increase in background radiation caused when the two firmaments collapsed.
   当两个天空倒塌时候，由于背景辐射的增加导致你们胸腺功能恶化。
5. The anisotropy of background radiation in the polar directions determines the geometric pattems of mid-ocean ridge systems on the Earth's surface and global tectonic movement of the Earth's crust.
   目前，地球遭受着较强的向南极之上的背景辐射和相对较弱的向北极之上的背景辐射。
6. Study on antioxygen level in inhabitants of high background radiation area in Yangjiang
   高本底辐射居民机体抗氧化水平研究
7. The Big Bang theory is supported by the discovery of faint, cool background radiation coming evenly from all directions.
   来自四面八方的均匀、微弱、冷却的背景辐射现象的发现支持了大爆炸学说。
8. For most people more than half of their natural background radiation dose comes from radon, a radioactive gas that can accumulate in homes, schools and workplaces.
   对大多数人来说，他们自然环境辐射剂量的一半以上来自氡&一种可聚集在家庭、学校和工作场所的放射性气体。
9. An Approximate Analytic Formula for Polarization of Cosmic Microwave Background Radiation
   宇宙微波背景辐射极化的近似解析公式
10. Small ripples in the temperature of the cosmic background radiation are thought to be evidence of slight fluctuations in the density of the early Universe, which resulted in the formation of galaxies.
    而宇宙背景辐射的气温波动则被认为是宇宙早期密度轻微变化的证明，正是这种密度变化才促使了星系的形成。
11. The government on Monday also widened the evacuation zone around Fukushima Daiichi to beyond the previous 30km radius, citing the possibility that radiation levels could exceed 20 millisieverts over a year, or about 10 times the dose from normal background radiation.
    日本政府周一还进一步扩大了福岛核电站周围疏散区的范围（原本为半径30公里）。政府表示，这一地区的年核辐射水平可能会超过20毫西弗特，即正常辐射水平的10倍。
12. They had found the cool afterglow of the big bang: the cosmic microwave background radiation.
    他们发现的是大霹雳冷却后的馀晖：宇宙微波背景辐射。
13. It is integrated with the functional modules for hull radiation, stack plume radiation, sea-sky background radiation, atmospheric transmission and infrared seeker.
    该系统集成了船体辐射场、排气烟羽辐射场、海天背景辐射、大气传输计算和红外导引头等功能模块。
14. To measure background radiation, we need subtle instruments; to measure beauty, we need alert intelligence and our five keen senses.
    测量背景辐射，我们需要精密仪器；而衡量美，则需要动用我们的聪慧和所有敏锐的感官。
15. The nature of this system is completely different from the one of an equilibrium state of photons, which is just the cosmic microwave background radiation observed.
    它与观测到的宇宙微波背景辐射的光子平衡态是截然不同的。
16. Cosmic-ray high energy physics Effect of the cosmic microwave background Radiation to the flux of the Superhigh Energetic Cosmic Ray
    宇宙微波背景辐射对超高能宇宙线流强的影响
17. The mottled look of the Cosmic Microwave Background radiation is the result of differences in temperature and density.
    宇宙微波背景图的斑点是由于温度和密度所造成的。
18. Radiation levels measured to date in other countries are far below the level of background radiation that most people are exposed to in every day circumstances.
    其他国家迄今测量到的辐射程度，远低于大多数人每天都会受到的本底辐射水平。
19. This is called natural background radiation.
    这称为自然环境辐射。
20. Incident Radiance Reuse Filter and Improvement of Radiance Estimation; Effect of the cosmic microwave background Radiation to the flux of the Superhigh Energetic Cosmic Ray
    入射光复用滤波和光辐射强度估计的改进宇宙微波背景辐射对超高能宇宙线流强的影响
21. However, measurements of the cosmic microwave background radiation temperature suggest that its structure may have some systematic order.
    然而，对宇宙微波背景辐射温度的测量显示宇宙的结构也许有某种系统的规律。
22. The background radiation is also analyzed that may exist and how to calculate it is introduced.
    文章还分析了激光雷达可能存在的背景辐射噪声及其计算方法。
23. The Observation and Theory of the Cosmic Microwave Background Radiation
    宇宙微波背景辐射的观测和理论
24. The recent progress on observation and theory of the cosmic microwave background radiation ( CBR) is presented in this paper.
    介绍了有关宇宙微波背景辐射（CBR）观测和理论研究的最新进展。
25. The study on the target radiation characteristic is base on the study on background radiation characteristic.
    背景辐射特性研究是目标辐射特性研究的基础。
26. We review new observational developments and theories of the infrared background radiation.
    本文评述了红外背景辐射的近代观测发展和理论。
27. The recent researches of cosmic X-ray background radiation are introduced in this paper.
    本文介绍了宇宙X射线背景的研究近况。
28. The target IR radiation characteristic are affected by background radiation.
    目标的红外辐射特性受其背景辐射的影响。
29. The infrared radiation characteristics of typical ground targets and backgrounds, atmosphere, sky background and solar are analyzed and the infrared characteristics model, characteristics prediction model, atmosphere transmission model, sky background radiation model and solar radiation model are constructed.
    通过分析典型地面目标和地物背景、大气、天空背景和太阳的红外辐射特性，建立了红外特性模型、特征预测模型、大气传输模型、天空背景辐射模型和太阳辐射模型。

noun

1. radiation coming from sources other than those being observed