Properzi普罗佩尔齐properadj.合适的；正当的；真正的properties of vulcanizate硫化胶性能proper sequence principle循序渐进原则properly matched marriage门当户对proper living level right适当生活水准权proper-total-coloring正常全染色properly divergent series正常发散级数proper growth temperature生长温度适当proper Material selection合理选材Properties characteristic性状特征proper controlling period防治适期