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
- universal element of a functor
- universal element zoning sequence
- universal elliptic curve
- universal enveloping algebra
- universal enveloping bialgebra
- universal enveloping superalgebra
- universal estimator
- universal ethic
- universal ethics
- universal evolution criterion
- universal extension
- universal family
- universal fiber bundle
- universal field
- universal field extension
- universal filter
- universal final epi-sink
- universal finder
- universal flaker
- universal flow
- universal force field
- universal form
- universal formal group law
- universal formula
- universal function