三、基于物料约束（Material Constrain） G# m0 h1 m+ N$ Y; q 当生产计划想要计划一个需要某物料的工序时，它将仅仅计划库存水平足以满足当时或以后的工序。
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material constrain
材料的限制
以上为机器翻译结果，长、整句建议使用 人工翻译 。
When establishing the optimization model, the material removal rate was set as one constrain.
设计优化数学模型时，将金属去除率作为一个约束条件。
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The concentration of metal as little as 2% by volume is low enough not to constrain the material's elasticity, but high enough to conduct electricity.
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