... Economics Materials 经济学教材 Economics for Materials物资经济学 ; 物质经济学 economics of materials flow technology 物流技术经济学 ...
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?物质经济学
... Economics Materials 经济学教材 Economics for Materials 物资经济学 ; 物质经济学 economics of materials flow technology 物流技术经济学 ...
双语例句
1
The invention has mild condition, simple operation course and cheap cost of solvent, which improves the recrystallizing purity with good economicsfor raw materials.