redeemable bonds

基本解释

The bonds, which were introduced in 1956, are in units of one pound and are redeemable at face value on demand .
这种债券始于1956年，以一英镑为单位，需要时可按面值兑现。
translation-dictionary.net
Perpetual Bond A bond with no maturity date. Perpetual bonds are not redeemable, instead they pay a steady stream of interest forever.
永久债券不设到期日的债券。永久债券不可赎回，但可提供永久的利息收入。
Its coupon bonds is priced by general Monte Carlo simulation, and the valuation produced with its redeemable and callable features are determined by least square Monte Carlo simulation.
其中，该产品的附息债券部分运用普通蒙特卡罗模拟方法进行定价，而可提前赎回和可提前回售部分的价值拟运用改进的最小二乘蒙特卡罗模拟方法进行定价。

Although the stamps did not collect interest, they were frequently redeemable for war bonds of a value equal to the contributed stamps.
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