Therefore, suppose the presupposition of economicbatchquantity model not to be completely established, its calculating formula shall be needed to be modified.
因此，经济批量模型假设的前提条件并不完全成立，经济订货批量的计算公式也就需要改进。
2
So how to make decision of the order batch, order quantity, order period of the materials according to the production need direct influences on the economic benefit.