1·It is not as though the rare-earth elements-scandium, yttrium and lanthanum plus the 14 so-called lanthanides-are all that rare.
并非所有稀土元素都像钪、钇、镧加上14所谓的镧系元素那样稀少。
2·Existing white LEDs are also based on blue ones, the light from which is used to excite a phosphor layer made of yttrium aluminium garnet (YAG).
现有的白色二极管同样基于蓝色的光——源于这种颜色的光是用于激发一种由钇铝石榴石组成的磷光层。
3·A dark mineral consisting of oxides of yttrium and erbium and tantalum and other minerals.
一种黑色矿物，由钇、铒、钽和其他矿物的氧化物组成。
4·The nanometer yttrium oxides were obtained through precipitation reaction with ammonium bicarbonate.
采用碳铵沉淀工艺，进行了纳米氧化钇的制备研究。
5·A mineral that is a source of rare earths; consists of silicates of iron and beryllium and cerium and yttrium and erbium.
作为稀有土壤来源的一种矿物，由铁、铍、铈、钇、铒的硅酸盐矿物构成。