基本解釋債務(wù)償付比率詞組短語短語debt -to-service coverage ratio 債覆蓋倍數(shù);使用償債覆蓋倍數(shù)debt service coverage ratio更多詞組專業(yè)釋義經(jīng)濟(jì)學(xué)債務(wù)償還比率債務(wù)償付比率