依据华东烧结模型中膨胀机制和收缩机制的数学表征 ,讨论了两种机制的相互关系。结果表明 :烧结初期 ,膨胀机制占主导 ;烧结中期 ,收缩机制占主导 ,并抵消膨胀机制的作用 ;烧结终结前 ,膨胀机制略占主导 Based on the mathematical characterization of expansion mechanism and contraction mechanism in East China sintering model, the relationship between the two mechanisms is discussed. The results show that in the initial stage of sintering, the expansion mechanism is predominant. In the middle of sintering, the shrinkage mechanism is dominated and the effect of expansion mechanism is offset. Before the end of sintering, the expansion mechanism is dominated