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bn:00780340n
Noun Concept
JA
表面硬化
EN
Case-hardening or surface hardening is the process of hardening the surface of a metal object while allowing the metal deeper underneath to remain soft, thus forming a thin layer of harder metal at the surface. Wikipedia
Relations
Sources
IS A
金属加工
HAS KIND
浸炭
窒化処理
EN
quench polish quench
Wikidata
JA
表面硬化

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