FRabbr.故障率(=failure rate)abbr.故障记录(=faillure record)abbr.故障报告(=failure report)
Freu弗勒
FRESadj.耐火的
FREBabbr.=Federal Real Estate Board 联邦不动产委员会;Federal Real Estate Board 联邦房地产理事会
Freg弗雷格
FRFTFlight Readiness Firing Test 导弹飞行准备发射试验
Frel弗雷尔
freq[电] 频率
Freh弗雷
FRRC=Flow-Recording Ratio Controller 流量记录比例控制器
FRFF分数傅里叶变换