“octahedra”簡單造句，octahedra造句子

The rare earth ions lie between the disilicate groups and the sheets of octahedra to form (8+3)-coordinated A(1)-polyhedra and 10-coordinated A(2)-polyhedra.

It was estimated that Mn~(2+) ionssituated in Bi sites of oxygen octahedra,The decrease of EPR signal intensity ofMn ion means the change of the valency of Mn after ultraviolet irradiation.