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化学热处理
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化学热处理
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thermo-chemical treatment
化学热处理
把金属材料或工件放在适当的活性介质中加热、保持,使一种或几种化学元素渗入其表层,以改变其化学成分、组织和性能的热处理工艺。
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outcome evaluation
outcome space
outcome stele at Jincheng Wuju Hall
outcrop
outcrop of mineral resources
outcrossing
out-degree
outdegree
outdegree of a vertex
outdiffusion
outdoor advertising media
outdoor air design conditions
outdoor airflow rate
outdoor air processing unit
Outdoor basketball stand
outdoor clothing
outdoor drainage system
outdoor electric lining engineering
outdoor fire protection system
outdoor fire water consumption
outdoor flowers
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Outdoor Photographer
outdoor rainwater drainage system
outdoor recreational sports
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