脱碳层、渗碳层、淬硬层的翻译：Decarburization layer, carburized, hardened 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Decarburized layer, carburized layer, hardened layer

Decarburization layer, carburized, hardened

Decarbonization level, cementation zone, hard level

Decarbonization layer, carburizing layers, Quenched hard layer

Decarburization layer, carburized, hardened