存續期間
duration
指相對于債券到期收益變化債券價格變動測量方法。它以一個簡單的數字概括出因利率變動而引起債券價格變化的特點
It means with respect to the change in the bond price movements measurements bond yield to maturity. It starts with a simple digital generalize due to changes in interest rates and bond prices caused by changes in the characteristics