伴有滥用可能性的精神兴奋剂药引起的有害效应
Psychostimulants with abuse potential
等效可用带宽
equivalent available bandwidth EAB
等效可用系数
equivalence available factor
equivalent available coefficient
equivalent availability factor
飞机使用可用度
Aircraft operational availability
固有的可选符记
inherently optional token
光合作用可用光光子通量PPFD
Photosynthetic photon flux density PPFD