overall material balance
... 一次通过物料平衡 throughmaterialbalance 总物料平衡 overall material balance 物料平衡区 mba ; ...
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经典的运输模型(产销平衡或产销不平衡)只能进行一种物料的运量分配，从而实现总运费最小的目标。
The classical transportation model (the output can satisfy the demand or not) can draw up the economical transportation quantity to minimize the whole cost when there is only one kind of material.
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