Freg弗雷格FRabbr.故障率（=failure rate）abbr.故障记录（=faillure record）abbr.故障报告（=failure report）freqency channelization频率信道化fruticose dracaena leaf铁树叶Fructus clausenae Lanii黄皮果Fructus Choerosponditis广枣fruclus ligustri lucidi女贞子Fructus Rosae Laerngtae金樱子Fresenius-Babo method弗-巴法(检体内潜在金属毒)frequence of precession回旋频率Frenco-Flemish School法兰西-佛兰德斯画派Fructus cnidii extracts解脲支原体