|
samarium n. 一种稀有金属元素,符号 Sm,原子序为 62一种稀有金属元素,符号 Sm,原子序为 62samarium n 1: a grey lustrous metallic element of the rare earth group; is used in special alloys; occurs in monazite and bastnasite [ synonym: { samarium}, { Sm}, { atomic number 62}] Samarium \ Sa* ma" ri* um\, n. [ NL., fr. E. samarskite.] ( Chem.) A rare metallic element of doubtful identity. [ 1913 Webster] Note: Samarium was discovered, by means of spectrum analysis, in certain minerals ( samarskite, cerite, etc.), in which it is associated with other elements of the earthy group. It has been confounded with the doubtful elements decipium, philippium, etc., and is possibly a complex mixture of elements not as yet clearly identified. Symbol Sm. Provisional atomic weight 150. 2. [ 1913 Webster]
|
安装中文字典英文字典查询工具!
中文字典英文字典工具:
英文字典中文字典相关资料:
|