Contrasting machining technology with punch technology of elastic seat ring, analyzing the error created by punching, introducing the characteristic of punching and the structure of cut and carry die.

对弹性阀座的机械加工工艺和冲压加工工艺进行了对比，并分析了冲压加工所产生的误差，介绍了冲压加工的特点及级进模的结构。

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Three minutes after the interval Basey struck after another Schmeichel error, his mis-cued punch falling to Basey who slotted the ball home with ease.

BBC: Charlton 4-1 Coventry

Right at the start of the match, Wigan keeper Chris Kirkland very nearly made a disastrous error when he spilled Ledley King's header but he was able to recover and punch the ball away from Michael Dawson, who was poised to nod home.

BBC: Wigan 1-0 Tottenham