本文首先是讨论在一个环T上全阵环的超幂零根。
This paper is first meant to the discuss supernilpotent radicals of the complete matrix ring Mn(T)overa ring T.
几个世纪之后,这些层层的石阵环便形成了这个山顶。
这么多年来,他的团队已经在掩埋这些石阵环的泥土里找到了很多人类骸骨的碎片。
Over the years, his team has found fragments of human bone in the layers of dirt that filled the complex.
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