订货原则与计划订单组合使用。
计划订单参数与“订货原则”参数配合使用。
Plan Orders operates in combination with the Order Policy field.
阐述了选型、订货加工中心的基础知识，订货原则，选型订货方法及工作步骤。
This paper elucidates the basic knowledge about CNC selecting and ordering, Principles for ordering and methods and procedures of selecting and ordering.
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