Retrospective Analysis of New and Severe ADR Case Reports in Our Hospital from 2002 to 2006;
我院2002～2006年新的和严重的药品不良反应报告分析
In the paper,the propertices of the roots of adjoint polynomial for a class of graph is investigated,and prove the roots to be single multiple.
研究了一类图伴随多项式的根的性质,并给出了这类图的伴随根是单重的。