Lanthanum praseodymium - cerium rare earth ( LPC ) was a patent composition.
镧镨铈混合稀土 ( LPC ) 是新型专利成分的混合稀土.
The synthesis, refinement and characterization of the phthalocyanine of europium, praseodymium and neodymium were intensively studied.
本文研究了铕酞菁、钕酞菁利镨酞菁配合物的合成 、 提纯与表征的方法.