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ra·di·a·tion AHD[rā'dē-āʹshən] D.J.[ˌreɪdiːˈeɪʃən]K.K.[ˌrediˈeʃən]n.（名词）- The act or process of radiating:放射：放射的行动或过程：the radiation of heat and light from a burning body.从一个燃烧物发出的热和光
- Physics 【物理学】
- Emission and propagation of energy in the form of rays or waves.发射：以光线或波的形式发出和传播能量
- Energy radiated or transmitted in the form of rays, waves, or particles.辐射：以射线、波或微粒的形式放射或传播的能量
- A stream of particles or electromagnetic waves emitted by the atoms and molecules of a radioactive substance as a result of nuclear decay.核衰变产生的微粒或电磁波：放射物的原子或分子由于核衰变放出的一束微粒或电磁波
- Anatomy Radial arrangement of parts, as of a group of nerve fibers connecting different areas of the brain.【解剖学】 辐射状：辐射状排列的部分，如联系大脑不同部分的一组神经纤维
- Ecology The spread of a group of organisms into new habitats.【生态学】 分散：组织群落新的产地的扩展
- Adaptive radiation.适应性辐射
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