感应淬火硬化层深大约9mm左右的翻译：Induction quenching of hardened layer depth approximately about 9mm 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

[object Object]

Induction quenching of hardened layer depth approximately about 9mm

About induction hardening hardening level depth approximately 9mm

induction quenching hardened deep around approximately 9mm

Induction quenching of hardened layer depth approximately about 9mm