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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62

samarium
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]


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