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综述了热应力缓和型梯度材料制备中的粉末冶金技术，并根据粉末冶金技术在生物梯度材料制备中的现状预测了其发展趋势。
In this paper, the powder metallurgy technology in preparation of thermal stress relaxation graded material is reviewed, and its development trend is predicted according to the present situation of powder metallurgy in the preparation of biological graded material.