Treasury securities cannot be redeemed before maturity and do not have call provisions.
国债在到期之前并不能被赎回，也没有赎回条款。
Generally, you don't have to worry about optionality or call provisions and so it's math.
一般来说，没有必要去担心期权性风险，或赎回条款，就只是数学游戏。
Some Treasury bonds issued before 1985 did have call provisions, however, so you need to watch out if you buy these bonds in the secondary market.
但是，一些在1985年前发行的国债有赎回条款，所以你需要注意你是否在二级市场上买了这些债券。
Present thesis develop a stock-based pricing model with exogenous credit risk that accounts for almost all convertible bonds on Chinese market, which have soft put and soft call provisions.
本文考察了我国可转换债券市场结构、条款设计和外部条件的特殊性，利用无套利均衡分析的方法，以基准股票价格为驱动因素建立了有针对性的可转换债券定价模型。
Convertible bonds often contain other embedded options such as call and put provisions.
可转换债券经常含有其他的嵌入期权，如赎回和回售条款。
Convertible bonds often contain other embedded options such as call and put provisions.
可转换债券经常含有其他的嵌入期权，如赎回和回售条款。
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