| (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance
同义词：radiotherapy, radiation therapy, actinotherapy, irradiation,
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| the act of spreading outward from a central source
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| a radial arrangement of nerve fibers connecting different parts of the brain
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| the spread of a group of organisms into new habitats
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| energy that is radiated or transmitted in the form of rays or waves or particles
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| the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
同义词：radioactivity,
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| syndrome resulting from exposure to ionizing radiation (e.g., exposure to radioactive chemicals or to nuclear explosions); low doses cause diarrhea and nausea and vomiting and sometimes loss of hair; greater exposure can cause sterility and cataracts and some forms of cancer and other diseases; severe exposure can cause death within hours; "he was suffering from radiation"
同义词：radiation sickness, radiation syndrome,
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| 1. | The resulting radiation is known as airglow .
其发出的辐射称为气辉。
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| 2. | Radiation must have exactly the frequency .
辐射必须严格具有频率。
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| 3. | Cloud has a dominant influence on radiation .
云对辐射有决定性的作用。
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| 4. | Electromagnetic radiation is corpuscular .
电磁辐射是微粒性的。
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| 5. | An adiabatic wall must be able to block radiation .
绝热壁必须能屏蔽辐射。
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| 6. | The density logger consists of a radiation source .
密度测井仪包括辐射源。
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| 7. | Nuclear radiations continue to reach the ground .
核辐射继续不断来到地面。
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| 8. | This intense radiation pervades all of space .
这种强烈的辐射遍及整个空间。
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| 9. | The radiation of the star could not be regulated .
恒星的辐射将是无法节制的。
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| 10. | Two different techniques of radiation were used .
人们采用两种不同的照射技术。
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