The supplier and the seller does not permit the stockout, the goods demand is the periodic demand, the supplier orders to the exterior supplier, the delivery cycle is a constant;
供应
和销售都不允许缺货，物品需求为
性需求，供应
部供应订货，交
是常数；
The supplier and the seller does not permit the stockout, the goods demand is the periodic demand, the supplier orders to the exterior supplier, the delivery cycle is a constant;
供应和销售都不允许缺货，物品需求为性需求，供应部供应订货，交是常数；
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