在实验的基础上，用工程近似法推导出在四辊组合孔型轧制圆系统产品时的力能参数，建立了轧制圆型系统产品的计算机辅助孔型及优化设计。
On the base of experiments, the author deduced some power energy parameters of round bar in four roll pass system, established the computer aided roll pass design.
在实验的基础上，用工程近似法推导出在四辊组合孔型轧制圆系统产品时的力能参数，建立了轧制圆型系统产品的计算机辅助孔型及优化设计。
On the base of experiments, the author deduced some power energy parameters of round bar in four roll pass system, established the computer aided roll pass design.
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