CaO+KH2PO4沉淀法
CaO+KH2PO4 precipitation method
Cd2沉淀
cadium hydroxide precipitate
Fe（OH）3沉淀法
ferric hydroxide sedimentation method
Fe沉淀
Fe(superscript 3+) deposition
LiCl沉淀法
LiCl precipitating method
MgOH2共沉淀
magnesium induced coprecipitation procedure