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
- joinery board
- join-extension
- join-homomorphic image
- join-homomorphism
- join-independence
- join infinite distributive
- join-infinite distributivity
- Joining Forces at Elbe River
- joining the universal quantifier
- join-irreducible element
- join-isomorphism
- join of complexes
- join of graphs
- join of projective spaces
- join of sets
- join of simplexes
- join of spaces
- join of topological groups
- join of topological spaces
- join operation
- join operator
- join optimization
- join point
- join-preserving homomorphism
- join-preserving mapping