rare-earth heat stabilizer 基本例句 稀土热稳定剂 The influence of rare earth heating stabilizer on the heating stability of PVC was studied in this paper.The heating stabilizing mechanism of the stabilizer was also discussed.本文研究了稀土热稳定剂对聚氯乙烯热稳定性能的影响,并对其热稳定机理进行了探讨。