ring n.戒指;环;圈;拳击场;马戏场;帮派n.铃声;钟声;电话;口气v.包围;环绕;形成圈v.打电话;回响;鸣响;按铃;听上去
双语例句
It gets some results about the relation between the direct summands of an additive group and the summands of the endomorphism ring of this additive group. 得到了关于加法群的直和项与其自同态环的直和项间相互刻画的一些结论。