According to the requirement of nuclear power developing in our country, we studied the manufacturing of fuel pellets with central hole: we determined the elastic after-effect of green pellets and the shrinkage after sintered through experiments; 根据我国核电发展的需要,对中孔环形燃料芯块的制造进行了研究:通过试验确定了生坯成形后的弹性后效,烧结后的收缩率;