商品效用
- 网络Product Utility; two elements of commodities
商品效用商品效用
Product Utility
... 2.总效用 Total utility,Total Utility 3.商品效用 Product Utility,Product utility 4.时间效用 Time utility,Time Utility ...
two elements of commodities
商品效用,two elements of... ... ) durable goods 耐用商品 ) two elements of commodities 商品效用 ...