Numerical simulation results show that the optimal preform H/D dimension thus obtained can greatly reduce hammering times and die wear.
数值模拟结果表明获得的预成形H/D最佳尺寸可明显减少模锻锤击次数和模具磨损。
Using the real-space renormalization group transformation method, critical behavior on two-dimension and d-dimension(d>2) X fractal lattices is studied.
采用实空间重整化群变换的方法，研究了2维和d（d>2）维X分形晶格上的临界性质。
The tensile strength formulas of granular materials are derived under the assumption that granular materials are D-dimension fractal bodies.
假定粒状材料是均匀的D维分形体，由此导出粒状材料的抗张强度公式，并用来估算颗粒在给定压力下的破碎几率。
The tensile strength formulas of granular materials are derived under the assumption that granular materials are D-dimension fractal bodies.
假定粒状材料是均匀的D维分形体，由此导出粒状材料的抗张强度公式，并用来估算颗粒在给定压力下的破碎几率。
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