So we must find a logical calculation method and design model for shallow square boxes in order to guarantee the forming quality and improve the economic performance.
因此，我们必须寻找一种合理的低盒形件毛坯外形计算和设计方法，来保证板料的成形质量，从而提高经济效益。
In order to optimize the structure parameters of the tower, the orthogonal design method is used.
为了优化塔架的结构参数，采用正交设计对其结构尺寸进行了优化。
This system used E-R chart method to design in order to minimum data redundancy and optimize data consistency and reduce updating abnormity.
本系统采用E - R图法进行规范化设计使得数据冗余最小，数据一致性好，更新异常问题不易发生。
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