基本解釋[經(jīng)濟學]債券抵押證券詞組短語短語haha Collateralised Bond Obligation 債券抵押證券primary collateralised bond obligation 的基礎債券抵押證券collateralised bond obligation更多詞組專業(yè)釋義經(jīng)濟學債券抵押證券