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fundamentals of welding
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fundamentals of welding
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工学
热处理工艺原理
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fundamentals of welding
焊接原理
被焊工件(同种或异种材质)通过加热或加压或两者并用,并且用或不用填充材料,使工件达到原子间的结合而形成永久性连接。
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