literal. Having a hardened surface layer; that has been subjected to case-hardening.
| 单词 | θ216529 |
| 释义 | society > occupation and work > materials > derived or manufactured material > metal > iron > [adjective] > hardened (3) case-hardened1683 literal. Having a hardened surface layer; that has been subjected to case-hardening. cyanided1921 Subcategories:— by cold working (1) |
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