The reasoning is usually based on a discounted-cashflow model; a lower bond yield means a lower discount rate and thus a higher present value for shares.
通常的理由是基于一个折现现金流量模型；较低的债券收益率意味着降低贴现率，从而提高股票的现值。
2
A bond purchased at a discount will have the reverse affect on yield.
以折扣价购买了债券，将有反向影响产量。
3
The Yield to maturity would be higher for a discountbond, based on the fact that you are still earning interest on par even if you paid under par.