工学 食品安全 释 food safety objective；FSO 食品安全目标 食品中的某种危害可提供或促进适当保护水平（appropriate level of protection，ALOP）的最大允许频率或浓度。食品安全目标的概念仅限于食品安全，不涉及质量。
网络与数据通信 无线网络 释文 free space optics, FSO 自由空间光束
- Overseas Chinese News
- Overseas Chinese voluntary associations
- overseas colonial plunder of the Western Europeancountries from the 16th to the 18th century
- Overseas construction project archives management
- overseas education in Late Qing Dynasty
- Overseas Huawen Pedagogy
- overseas intelligence unit
- overseas investment insurance system
- overseas listing of securities
- Overseas News
- Overseas Spread of Traditional Chinese Opera
- Overseas Zhongshan park
- overseeding
- over-seeding sower
- oversensitivity
- overshoot
- overshooting
- overshooting convection or penetrating convection
- overshot
- Oversight Law of the People's Republic of China
- oversimplification
- oversize
- oversize waveguides
- oversizing
- oversleeve