| 单词 | 光射线 |
| 释义 | 〔terbium〕A soft, silvery-gray metallic rare-earth element, used in x-ray and color television tubes. Atomic number 65; atomic weight 158.924; melting point 1,356°C; boiling point 3,123°C; specific gravity 8.229; valence 3, 4. See table at element 铽：一种银灰色的软金属性稀土元素，用于X光射线和彩色显像管中。原子序数65；原子重量158.924；熔点1,356°C；沸点3,123°C；比重8.229；化合价3,4 参见 element〔rem〕A unit for measuring absorbed doses of radiation, equivalent to one roentgen of x-rays or gamma rays.雷姆：度量被吸收的辐射数量单位，相当于一伦琴的X光射线或伽码射线〔rem〕The amount of ionizing radiation required to produce the same biological effect as one rad of high-penetration x-rays.雷姆：产生和一拉得强渗透的X光射线等量的生物反应的致电离辐射的数量〔Moseley〕British physicist who determined that the atomic number of an element can be deduced from the element's x-ray spectrum.莫斯利，亨利·格温·杰弗里斯：(1887-1915) 英国物理学家，提出一种元素的原子序数能够从这种元素的X光射线光谱中推断出来 |
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