单词 | 光玻璃 |
释义 | 〔samarium〕A silvery or pale gray metallic rare-earth element found in monazite and bastnaesite and used as a dopant for laser materials, in infrared absorbing glass, and as a neutron absorber in certain nuclear reactors. Atomic number 62; atomic weight 150.35; melting point 1,072°C; boiling point 1,791°C; specific gravity (approximately) 7.50; valence 2, 3. See table at element 钐:一种银色或灰色稀土金属元素,含于独居石和氟碳铈矿中,用于激光制品掺杂剂,红外线吸光玻璃,在一些核反应堆中作中子吸收剂。原子序数62;原子量150.35;熔点1,072°C;沸点1,791°C;比重约7.50;化合价2,3 参见 element |
随便看 |
|
学习网英语词汇栏目收词371507余条,连同派生词、复合词、词组和习语等。每个词条提供了音标、词性、释义、用法、搭配和同(近)义词等多项功能,对所收词汇进行全方位的解释和说明,内容丰富,功能全面。