irradiation

详细解释:n. 发光, 光线, 照射
【化】 辐射; 辐照
【医】 照射[法], 扩散, 放散, 光渗

英语解释：

名词 irradiation:

the condition of being exposed to radiationa column of light (as from a beacon)同义词：beam, beam of light, light beam, ray, ray of light, shaft, shaft of light