Federation of American Scientists美国科学家联盟 Flexible Access System灵活接入系统 Financial Accounting Standards（美国）财务会计准则 Free Alongside Ship装运港船边交货 Frame Alignment Signal帧定位信号 Faculty of Arts and Sciences艺术和科学学院 Federation of Astronomical Societies联盟的天文协会 Fiber Access System光纤接入系统 Final Approach Segment最后进近段 Federation of Atomic Scientists (now Federation of American Scientists)原子能科学家联合会(现在的美国科学家联合会) Firsts and Seconds (lumber/forest industry)第一,秒(木材/林产工业) Force Augmentation System (military aviation; helicopters)力量增强系统(军事航空、直升机) Federal Antimonopoly Service (Russia)联邦反服务(俄罗斯) Forms Automation System自动化系统的形式 Functional Area Services职能部门的服务