基本解釋[經(jīng)濟(jì)學(xué)]安全邊際率詞組短語(yǔ)短語(yǔ)Margin -of-Safety ratio 安全邊際率margin of safety ratio更多詞組專(zhuān)業(yè)釋義經(jīng)濟(jì)學(xué)安全邊際率