Introducing the type of the precipitation-hardenable stainless steels,the mechanism of the precipitation hardening and the Martens o f the precipitation stainless steels in producing the valve.是什么意思_Introducing the type of the precipitation-hardenable stainless steels,the mechanism of the precipitation hardening and the Martens o f the precipitation stainless steels in producing the valve.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句