raw material economics

例句：

1. 1. The rawmaterials for the new project are being sourced from various countries.
   新项目的原材料正在从各个国家采购。
2. 2. The raw material economicsof the industry have been studied extensively.
   该行业的原材料经济已经进行了深入研究。
3. 3. The raw materialeconomics of the industry will be affectedby changes in global trade policies.
   该行业的原材料经济将受到全球贸易政策变化的影响。