供求关系
质的适应性和量的平衡


                

                

                    


                    
                            
SUPPLY-DEMAND RELATIONSHIP
QUALITATIVE ADAPTABILITY AND QUANTITATIVE BALANCE


                

            

        



	

		

			

		


		

			


    

    

        
        
            谈判采购
            Competitive Negotiation
        
    

    




			

				

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