Using metal plasticity forming theory, by the technology calculation of sulfur hexafluoride breaker shell flanging, a technology calculation method was introduced about pre-punching flanging.

运用金属塑性成形原理，通过六氟化硫断路器壳体孔翻边的工艺计算，介绍了一种曲面孔翻边预冲孔的一种近似工艺计算方法。

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His family's legal and financial troubles transformed Wilpon into one of New York's pre-eminent punching bags and called into question the team's stability.

WSJ: Wilpon Sees Better Days Ahead