本方法研究轧管变形，具有计算费用低，输入数据简单的特点。
It has the advantages of Iow computing cost and simple input data when using this method to study the tube plastic deformation.
改造方案费用低，施工时间短，在电机的设计中采用最大静力矩的计算原则。
The modification was low_costed, needing only a short construction time. The maximum static moment calculation criterion was adopted to design the driving motor.
作为结构分析的有限元方法从精度上来说是令人满意的，但对于结构设计来说计算效率低、费用高。
FE methods can meet the demands in accuracy, but it can be computationally expensive and complex in structural design.
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