substitution rate

• 代换率,置换比,替代率

substitution rate的用法和样例：

例句

1. When there is a diminishing marginal rate substitution, preferences are convex.
   边际替代率是逐渐减少的，偏好就会凸起。
2. The marginal rate of substitution diminishes as we move down along an indifference curve.
   当我们向下滑动无差异曲线时，边际替代率的减少。