The polycrystalline Sr<sub>9</sub>Ca(PO<sub>4</sub>)<sub>6</sub>Cl<sub>2</sub>:Eu has been synthesized by solid state reaction.The reaction condition,the appropri
Research on the separation of tungstenand molybdenum is of importance as it is a ba-sic problem in the metallurgy and industry oftungsten.Traditional methods fo