Properzi普罗佩尔齐properadj.合适的；正当的；真正的proper graph labelling图的正常标号properties of materials材料的特性properties of particles颗粒物性proper ecological water适宜生态需水proper spotting of cars正确的停放车辆proper orthogonal group正常正交群proper health technique卫生适宜技术proper noun recognition专有名词识别properness of the party当事人适格proper professional act正当业务行为