comparative cost

comparative cost advantage

[经] 比较成本利益

comparative cost diference

[经] 比较成本差异

comparative cost sheet

[经] 比较成本表

comparative cost studies

[经] 比较成本调查(研究)

comparative costs

[法] 比较成本

difference of comparative costs

[经] 比较成本差

law of comparative cost

[经] 比较成本定律

principle of comparative costs

[经] 比较成本原理