The developments and present situation of magneto - optical materials rare earth ( RE ) iron garnets, were reviewed. 本文以稀土铁石榴石为主,综述了 磁光材料 的发展和研究现状 、 着重介绍了在光通信器件中的应用.
过去人们相信君权神授.People used to believe in the divine right of kings.紫色 、 紫红色 - 王室尊严、君权、公正.Purpure, purple - Royal majesty , sovereignty and justice.但是近来,这种矛盾的情绪逐渐转变成彻底的君权思想.But lately ambivalence is turning into out - and - o...