差价”一词衡量的是具有不同到期日或到期日的两种债券的息票或利率之间的差异。 这种差异也称为债券收益率曲线的斜率，该曲线是绘制相同质量但在特定时间点的不同到期日的债券的利率的图表。 收益率曲线的形状不仅对经济学家来说对于未来利率变化的预测指标也很重要，而且它的斜率也是一个利益点，因为曲线的斜率越大，期限扩散越大（短期和 长期利率）。 如果期限差价为正，则长期利率高于该时间点的短期利率，并且该利差被认为是正常的。 而负期限差价表明收益率曲线反转且短期利率高于长期利率。
The term “spread” measures the difference between coupons or interest rates for two bonds with different maturities or maturities. This difference is also known as the slope of the bond yield curve, which is a graph plotting the interest rates of bonds of the same quality but different maturity dates at a particular point in time. The shape of the yield curve is not only important for economists to predict future interest rate changes, but its slope is also a benefit point, because the greater the slope of the curve, the greater the period spread (short-term and long-term interest rates). If the term difference is positive, the long-term interest rate is higher than the short-term interest rate at that point in time, and the spread is considered normal. The negative term spread indicates that the yield curve is reversed and the short-term interest rate is higher than the long-term interest rate.