The optimization of drawing technique was researched, and the influence of different blank holder force and minimum die fillet radius on stamping forming was studied as well.

对该零件成形工艺进行了优化，研究了不同的压边力、最小模具圆角半径对冲压成形的影响，通过对模拟结果的分析得出了空调前板的最优化成形方案。

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Through the limiting drawing ratio tests, the influences of rolling, annealing, blank holder force, drawing gap, drawing temperature and speed on the forming performance were investigated.

通过极限拉伸比试验，研究了轧制、退火、拉伸温度、拉伸速度、拉延间隙以及压边力等工艺因素对镁合金板材成形性能的影响。

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The result indicates that proper blank holder force and liquid pressure will help to reduce the occurrence of drawing defects and the application of hydroforming can get more uniform wall thickness.

研究结果表明，合适的压边力和液体压力能控制盒形件拉深缺陷的发生，采用液压拉深盒形件可获得更好的壁厚分布。

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And today, Secretary Napolitano and the Attorney General Eric Holder are formalizing a joint task force between the Department of Homeland Security and the Department of Justice that will leverage the investigative capabilities of both agencies to work with Mexico in tracking down the perpetrators.

WHITEHOUSE: Press Briefing

"In an immense show of force, police have shown their presence, " said Kanene Holder, a spokeswoman for the Occupy Wall Street movement.

CNN: New York court upholds eviction of Occupy protesters

In a heated exchange with Senator Ted Cruz during a hearing earlier in the day, Mr Holder said it was not appropriate to use lethal force - "drones, be it guns or whatever else" - on a US citizen.

BBC: US & Canada