基本解釋[經(jīng)濟(jì)學(xué)]降功率系統(tǒng)詞組短語(yǔ)短語(yǔ)safety power cutback system 安全功率下降系統(tǒng)power cutback system更多詞組專業(yè)釋義經(jīng)濟(jì)學(xué)降功率系統(tǒng)