按工艺性质分类，如拉深模、粉末冶金模、锻模等。
According to the classification process characteristics, such as drawing die, powder metallurgy mold, die, etc.
阐述了花纹粉末涂料的分类、生产工艺和原理。
Its classification , production technology and principle were described.
按照所用金属原料在制备过程中的状态对多孔金属的制备工艺作了分类介绍，包括基于金属熔体的工艺、基于固态金属粉末的制备方法、基于电或化学沉积的方法。
According to the original state of raw metal material used in manufacturing, the manufacturing process can be classified as: melt-based process, powder-based process and deposition technology.
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