Instrument Flight Rules (aviation)仪表飞行规则(航空) Increasing Failure Rate单调增加故障率 Instrument Flight Rules仪表飞行规则 International Federation of Robotics国际机器人学联合会 Injury Frequency Ratio (OSHA)伤害频率比(职业健康安全局) Interrupt Flag Register中断标志寄存器 Institute of Food Research（英国）食品研究所 Infrared红外的，红外线 Infrared Receiver红外接收器 Institute of Finance Research (Vietnam)金融研究协会(越南) Instant Failure Rate即时的失败率 Initiative for Fiduciary Responsibility主动的信托的责任 Institute for Fisheries Research研究所的研究。渔业部 Intrinsic Failure Rate (reliability engineering)内在的失败率(可靠性工程) Institut fÜr Religionspolitologie eV (Duisburg, Germany)Institut fÜr Religionspolitologie eV (Duisburg, Germany)