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All things in this repository are very important for a graphics course. If you are doing a graphics course, then these things are very essential for you.

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Can you chip in? This year we’ve reached an extraordinary milestone: 1 trillion web pages preserved on the Wayback Machine. This makes us the largest public repository of internet history ever ...

拉伸成型加工是利用模具将平板毛坯成形为开口空心零件的冲压加工方法。拉伸作为主要的冲压工序之一，应用广泛。用拉伸工艺可以制成圆筒形、矩形、阶梯形、球形、锥形、抛物线形及其他不规则形状的薄壁零件，如果与其他冲压成形工艺配合，还可制造 ...