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noun
一. (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance
Synonym: radiotherapyradiation therapyactinotherapyirradiation
二. the act of spreading outward from a central source
三. a radial arrangement of nerve fibers connecting different parts of the brain
四. the spread of a group of organisms into new habitats
五. energy that is radiated or transmitted in the form of rays or waves or particles
六. the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay
Synonym: radioactivity
七. 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
e.g. he was suffering from radiation
Synonym: radiation sicknessradiation syndrome
一. 辐射物；放射物
Radiation consists of very small particles of a radioactive substance. Large amounts of radiation can cause illness and death.
e.g. They suffer from health problems and fear the long term effects of radiation...
他们遭受着健康问题的困扰并且害怕辐射的长期影响。
e.g. If the cancer returns, radiation therapy is successful in 九零 per cent of cases.
如果癌症复发，放射性疗法有九零%的治愈率。
二. 辐射能;放射能;（尤指）热能
Radiation is energy, especially heat, that comes from a particular source.
e.g. The satellite will study energy radiation from stars.
这颗人造卫星将用来研究恒星的能量辐射。
一. radiation的翻译
一. 放射：电离辐射(ionisindradiation)计量,在已往称之为放射(radiation)计量,放射的主要含义是指放射性核素衰变产生的辐射,后来延伸为医学诊断成像技术,而电离辐射是指一切能使物质产生电离的辐射,包含放射计量.
二.
二. 散热：辐射散热(radiation)辐射指热由一个物体表面通过电磁波的形式传至另一个与它不接触物体表面的一种方式. 人体在安静状态下处于气温较低环境中约有六零%的热量是以此方式散热,是主要的散热形式.
三. radiation在线翻译
三. 射线：是一种可检测板面上所受照的UV光或射线(Radiation)能量强度的仪器,可测知每平方公分面积中所得到光能量的焦耳数. 此仪并可在高温输送带上使用,对电路板之UV曝光机及UV硬化机都可加以检测,以保证作业之品质.
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