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[物]背景辐射；[天][核]本底辐射
1、background───vt.作…的背景；adj.背景的；发布背景材料的；n.背景；隐蔽的位置
2、radiation oncology───[肿瘤]射线肿瘤学
3、radiation symbol───辐射符号
4、annihilation radiation───[物]湮没辐射
5、consolidation radiation───固结辐射
6、infrared radiation───红外辐射；[红外]红外线照射
7、radiation───n.辐射；放射物
8、deare radiation───迪尔辐射
9、radiation treatment───放射疗法，放疗；放射线处理；射线防腐；照射处理
1、This is called natural background radiation.───这称为自然环境辐射。
2、"Although we live bathed in a sea of background radiation, people treat any increment as a dire risk, " he said by email.───“虽然我们生活在一个充满辐射的世界，但人们把任何辐射的增加当成致命的危险，”他通过电子邮件说到。
3、But natural background radiation is more than 100,000 times the highest levels detected.───但其检测量大大高于自然本底辐射量一万倍。
4、As the universe expands, the wavelengths of the background radiation stretch and the radiation becomes more diffuse.───宇宙膨胀时，背景辐射的波长会被拉长，使得辐射更扩散。
5、Humanity was almost extinguished, their spirits becoming part of the background radiation that blanketed the earth.───近乎消失的人类，其灵魂也成为了充斥着背景辐射的地球的一部分。
6、Background radiation delivers the average person a radiation dose of about 3 millisieverts (mSv) a year.───平均每个人一年所接受到的背景辐射量为3豪希弗。
7、These levels of natural and background radiation is normal.───这些都只是正常辐射。
8、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。
9、But the clusters are also moving relative to the background radiation, so the scattered light gets distorted further by the Doppler effect.───但是星系团相对于背景辐射也在运动，因此散射光出于多普勒效应而被进一步扭曲。
1、However, measurements of the cosmic microwave background radiation temperature suggest that its structure may have some systematic order.
2、The unwanted radiation is referred to as background radiation.
3、Fluctuations in the cosmic microwave background radiation probe the earliest moments of the universe.
4、This cosmic microwave background radiation, they said, represents the ancient afterglow of the big bang.
5、The decision follows concern over levels of background radiation in the city's streets.
6、He says it was only one twentieth of background radiation in Oxfordshire.
7、Levels of background radiation are frequently published in the Moscow press, and a number of environmental consultancies run radiation monitoring services.
8、These gases scatter light from the cosmic microwave background radiation as it passes through the clusters, similar to the way Earth's atmosphere can scatter starlight, making some stars twinkle.
9、And Wilson and Penzias discovered the cosmic microwave background radiation, physical evidence for the Big Bang, while fiddling with an antenna designed to catch radio waves bouncing off satellites.