2515| 10
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齒輪加工求助 |
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點評
嗯,,謝謝
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點評
關鍵這個設備。,。,。
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點評
20CrMnTiH,,熱處理要求滲碳,樣品量少
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小黑屋|手機版|Archiver|機械社區(qū) ( 京ICP備10217105號-1,,京ICP證050210號,,浙公網(wǎng)安備33038202004372號 )
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