片语
person-time of card using刷卡人次
Leave hospital person-time出院人次
passenger person-time of rail traffic轨道交通乘客人次
Transaction person-time交易人次
Person-time Attended Sanitation Rescue参加卫生救护培训人次数
Person-time Attended Publicizing Activity参加各种宣传活动人次数
person-time at risk以疾病危及人时
person-time incidence rate人时发病率
person-place-time combination人地时三结合