FRZn.冻(凝结)FRabbr.故障率（=failure rate）abbr.故障记录（=faillure record）abbr.故障报告（=failure report）Freiling弗赖林Frenkian弗伦基安Frenning弗伦宁Frutuoso弗鲁托索frustulen.硅藻的细胞膜Frullani弗鲁拉尼Frejlach弗赖拉赫Freuchen弗罗伊兴Freimannn.弗赖曼Frericks弗雷里克斯