In addition, it is proved that if R isa MHR-ring then so are the polynomial ring R[x] and the matrix ring M_(R) over the ring R. And a necessary and sufficient condition for a ring to be a nil MH_1R-ring is also given.是什么意思_In addition, it is proved that if R isa MHR-ring then so are the polynomial ring R[x] and the matrix ring M_(R) over the ring R. And a necessary and sufficient condition for a ring to be a nil MH_1R-ring is also given.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句