?永久债券
回复: 永久债券 (Perpetual Bonds)指一种不规定本金返还期限，可以无限期地按期取得利息的债券。永久债券的利息一般高于浮动利息，债券的发行人一般多为商业银行。
?无期债券
... perpetual bond 永久债券 perpetual bonds 无期债券;永久债券 Pinay bond 皮纳券 ...
?永续债券
...【相关导读】永续债券（Perpetual bonds）：也叫无期债券，它并不规定到期期限，持有人也不能要求清偿本金，但可以按期取得利息。
?永世债券
... Par Value票面值 Perpetual Bonds永世债券 Placing配售 ...
无期债券
永续公债协会
永久债券
But here is the thing: there are few obvious natural buyers for 100-year or perpetual bonds.
BBC: Should Osborne borrow for 100 years?
Typically, buyers of perpetual bonds receive a fixed rate of return but expect the issuer to redeem the bond after several years.
WSJ: Perpetual Bond Risk Rises With US Treasury Yields
But back to the 100-year or perpetual bonds.
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