Yttrium serves as an ideal non - magnetic diluent for the rare - earth metals.钇被用作稀土金属一种理想的 非磁性 稀释剂.This is the GaN LED chip and Yttrium Aluminum Garnet ( YAG ) package together cause.这种LED是将GaN芯片和钇铝石榴石 ( YAG ) 封装在一起做成.T...