The research innovations are as follows: (1) From the angle of multi-dimension space, studies the economic effects, economic benefits and implementation costs of tradable products standard.

  • 论文研究的创新之处具体表现在: (1) 从多维空间的角度研究了可贸易品标准的经济效用、经济收益及实施成本。
目录 查词历史