We study the existence problem of nil rings of a simple circle group in the page.We prove that some normal subgroups is trival, of circle group of a simple nil ring.是什么意思_We study the existence problem of nil rings of a simple circle group in the page.We prove that some normal subgroups is trival, of circle group of a simple nil ring.在线翻译_英语_读音_用法_例句