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高频感应淬火不能达到硬化冷精锻直齿圆柱齿轮齿面的目的。
The high frequency induction hardening can't raise the surface microhardness of the cold precision forging spur gear.
youdao
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高频感应淬火不能达到硬化冷精锻直齿圆柱齿轮齿面的目的。
The high frequency induction hardening can't raise the surface microhardness of the cold precision forging spur gear.
youdao