In this paper, by using DVM-one of the methods based on the first-principles theory and OA theory the author has finished some research work as follows:Firstly, The author has studied the rare metal Rh and Ir systemically.是什么意思_In this paper, by using DVM-one of the methods based on the first-principles theory and OA theory the author has finished some research work as follows:Firstly, The author has studied the rare metal Rh and Ir systemically.在线翻译_英语_读音_用法_例句