将有限域上接近MDS码的概念推广到有限主理想环上的接近MDR码。利用有限主理想环上线性码为有限链环上线性码的中国积,将有限主理想环上线性码为接近MDR码的判定转化成有限链环上接近MDR码的判定。进一步,将有限链环上接近MDR码的判定转化为它的剩余类域上接近MDS码的判定,从而描述了有限主理想环上接近MDR码。 The concept of near-MDS codes over finite fields is extended to the near-MDR codes on finite-master ideal rings. By using the Chinese product of finite prime ideal rings with linear codes as linear codes over finite links, the decision that the linear predominant linear codes on the finite principal ideal ring are close to the MDR codes is transformed into the decision of near-MDR codes over finite links. Further, the decision of approaching the MDR code on a finite link is transformed into the decision of a near MDS code on its remaining domain, thereby describing a close-on MDR code on a limited primary ideal ring.