annual average cost

• 年平均成本

annual average cost的用法和样例：

例句

1. Average cost of the system queries that could be reduced by the index in the group.
   可通过组中的索引减少的系统查询的平均成本。
2. At the peak of efficiency, the marginal cost of production equals the average cost of production.
   在效率的峰值点，生产的边际成本等于生产的平均成本。