Through analysis and tests, the authors selected corrosion resistant nitrogen case-hardening process to replace chrome plating.
通过分析和试验，我们采用了抗蚀渗氮取代电镀铬工艺。
Through analysis and tests, the authors selected corrosion resistant nitrogen case-hardening process to replace chrome plating.
通过分析和试验，我们采用了抗蚀渗氮取代电镀铬工艺。
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