4296| 3
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3/4H硬度等級是什么意思 |
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點評
為啥HV要求表面平整?
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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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