免疫效果调研
investigation of immunity efficacy
特殊效果调控台
special effect control console
提效效果
the effect of efficiency improvement
效果效益评估
evaluation of effect and benefit
带宽有效调制
bandwidth efficient modulation
等效调幅
equivalent amplitude modulation
amplitude modulation
Equivalent
等效调幅装置
amplitude modulation equivalent
低效调速系统
low efficiency speed control system