prfpulserecurrencefrequ..PRFM[医][=prolonged rupture of fetal membranes]胎膜延迟破裂PRFTPortable Rod-and-Frame Test 便携式杆框测试prfepolar-reflection faraday effect 极反射法拉第效应prfgproofing 证明，验算prfrproofreader 校对者PRFCNPurification; 净化prfnlprofessional 职业的bprfbulletproof 防弹的CPRFCancer and Polio Research Fund 癌症与小儿麻痹症研究基金HPRF[医]High Pulse Repetition FrequencyLPRFlowpowerradiofrequen..sfprfsemi-fireproof 半防火的，半耐火的PRFpulserecurrence[repe..pRF多克隆类风湿因子PrF1-氟丙烷；丙基氟