1.Mimetite group minerals are a group of isomorphic series minerals with hexagonal system,which include mimetite,vanadinite and pyromorphite.
铅矿族矿物是一族六方晶系类质同象系列矿物,铅矿、钒铅矿和磷氯铅矿。
2.Further more,we prove that the cohomotopy groups is isomorphic to K1 -group of the continuous algebra on topological boundary of bounded domains in C.