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
- Black, Joseph
- black king fish
- Black Lacquer Book Cabinet with Mother-of-pearl Inlays Pattern
- black-lacquer brush pot inlaid with multi-precious objects in flower designs
- Black-lacquered Rectangular Dish Inlaid with Interlocking Lotus Design in Mother-of-pearl
- Black-lacquered Sutra Case Inlaid with Floral and Bird Designs in Mother-of-pearl
- blacklead
- Black Legend
- black letter
- black liquor combustion
- black liquor evaporation
- black liquor extraction
- black liquor from paper industry
- black list
- black locust
- Blackman function
- black matrix
- black matrix screen
- Black Mesa Coal Slurry Pipeline
- black metal ores
- Black Mirror
- Black model
- Black Monk
- Black Mountain College
- Black Mountain Poems