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cold upsetting
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cold upsetting
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cold upsetting;cold heading
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在常温下,利用坯料的塑性变形,通过模具和一定的镦挤力,获得所需形状、尺寸及性能零件的塑性成形方法。
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Weaponry Painting Album
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weapons industry
weapons in Palaces of the Qing Dynasty
weapons used in an opera performance
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Wearing Shoes in Yi Bridge
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