痕量稀土元素
trace rare earth elements
矿物微量和稀土元素
trace and rare earth elements of mineral
轻稀土元素
light rare earth elements LREEs
artificial fracture
light rare earth element
铈组稀土元素
cerium-group rare earth elements
cerium-group rare earth element
cerium subgroup rare earth elements
微量稀土元素
minor-alloying element RE
稀土和非稀土元素
rare earth elements lnon rare earth elements
稀土元素(Ⅲ)的碳酸盐和氯化物
Carbonates and chlorides of rare earth elements