Freg弗雷格FRabbr.故障率（=failure rate）abbr.故障记录（=faillure record）abbr.故障报告（=failure report）Freixenet Cordon Negro菲斯奈特黑牌汽酒fructus citri aurantii[医] 酸橙枳壳fructus lycii sinensis[医] 津枸杞frnck condon principle富兰克康登原理freqeuncy demultiplier分频器frequence of vibration振动频率Fresnel reconstruction菲涅耳重建法Frencisella tularensis土拉菌Frugtus Ligustri lucid女贞子fructus anisi stellati[医] 八角茴香