获得上限
Gain the upper limit
以上为机器翻译结果，长、整句建议使用 人工翻译 。
对平面变形拉拔问题建立了运动许可的连续速度扬并获得上限解析解。
A kinematically admissible continuous velocity field is established and applied to the plane strain due to drawing, and the upper-bound analytical solution is obtained.
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