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磷化皂化
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磷化皂化
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工学
锻造润滑剂
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phosphate-saponification
磷化皂化
在冷挤压之前,对黑色金属毛坯进行处理与润滑,在毛坯表面形成一层塑性良好且具有耐极压性能的磷酸盐膜和皂化膜的锻造润滑剂的工艺。
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cosmic chemistry
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cosmic gas dynamics, cosmic aerodynamics
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