luochangqin 发表于 2022-11-3 08:23 南高齿用在轧钢机械的硬齿面齿轮的材料,38CrNi2Mo居多。
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luochangqin 发表于 2022-11-4 14:35 不懂得怎样把图片传上来,现在补上,不好意思
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