proportional mortality rate相应死亡率;翻译
proportional flat rate比例税率
proportional charge rate比例收费率
proportional morbidity rate比例发病率
proportional tax rate structure比例税率结构
cox proportional hazard ratecox比例危险率模型
proportional tax rate[税收] 比例税率;比例税率
proportional death rate死因顺位
proportional rate of tax[税收] 比例税率