Propersi普罗佩尔西properadj.合适的；正当的；真正的properties of layer土层性质proper yield per mu亩产增加适宜proper arrangements妥善的安排properly hyperbolic真双曲proper factor group真剩余群,真商群proper inflated tire正常充气轮胎properdin deficiency备解素缺陷症properties influence性能影响proper communication国际交流Proper roasting time火候