半成品成本是指自制半成品价值，即已在生产过程的一个或几个阶段上完工，但尚未最后中间产品的成本。例如：钢铁联合企业的生铁、钢锭、纺织印染厂的棉纱和坯布等。半成品必须是经过检验合格，送入半成品库或转入下一生产阶段的，否则应作在产品。
实际上，如果度量基本的增值(除进口半成品的成本之外)，中国对美国出口量占其GDP的比例不到5%。
In fact, if measured on a value-added basis (to exclude the cost of imported components), China's exports to America account for less than 5% of its GDP.
该部分首先介绍了线性规划的理论，提出了成品和半成品库存量分配的线性规划模型。仿真实例表明该模型能降低成品库存，从而进一步降低库存成本。
After introducing theory of Linear Planning, it gives inventory distribution models for products and semi-finished products, which can further reduce the products inventory.
你不光能灵活的调整不同材料组分，还能省去加工半成品的高成本过程以及相关的物流成本。
Not only can you vary the composition of the material flexibly, you also avoid the highly costly process of manufacturing semifinished parts, together with the associated logistics costs.
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