| 释义 |
丙种射线bǐngzhǒng shèxiàn镭和其他一些放射性元素的原子放出的射线,是波长极短的电磁波,穿透力比爱克斯射线更强,能穿透几十厘米厚的钢板。工业上用来探伤,医学上用来消毒、治疗肿瘤等。也叫伽马(gāmǎ)射线。也写作γ射线。{gamma ray; γray; ray emitted from radium and other radioactive elements; electromagnetic wave with an extremely short wavelength and a higher penetrability than X ray, capable of penetrating a steel plate dozens of centimetres thick, and used in industry to detect defects, and in medicine to sterilize and treat tumours. also called 伽马射线gāmǎ shèxiàn; also written as γ射线gāmǎ shèxiàn} |