常見例句雙語例句This peper gives two necessary and sufficient conditions for a ring to be a nil MHR-ring. It is obtained that any nil MHR-ring is extension closed.給出滿足主右理想極小條件詣零環(huán)的兩個充要條件,此類環(huán)是擴(kuò)張閉的。 返回 nil ring