短語詞組短語LED droop 光傚下降現(xiàn)象;傚率下降speed droop 速度下降率;速度降低;降速;調(diào)速率efficiency droop 量子傚率下降tip droop 翼尖下垂droop governor [機(jī)]下降調(diào)速器droop nose 下垂機(jī)頭droop pulses 衰減脈沖DROOP circuit DROOP 廻路KW Droop 不等率 返回 droop