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N a class of 15 chemically related elements with atomic numbers from 57 (lanthanum) to 71 (lutetium) 镧系
ABSTRACT Rare earth is a collective name for 17 elements including ytterbium (Yb), scandium (Sc), and lanthanide series.
提要稀土是化学元素周期表中的镧系元素和化学性质相似的钇、钪共17种元素的统称。
The rare-earth salts are obtained by organizing lanthanide series inorganic rare-earth salts and long-chain fatty acids.
有机稀土盐是由镧系无机稀土盐和长链脂肪酸进行有机化得到有机稀土盐。
Lanthanide: Any of the series of 15 consecutive chemical elements in the periodic table from lanthanum to lutetium (atomic numbers 57-71).
镧系：周期表中从镧到镏（原子序数57～71）15种按顺序排列的化学元素系列。
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