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誰知道布氏硬度和洛氏硬度的換算 |
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硬度換算表: 布氏硬度與洛氏硬度
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小黑屋|手機版|Archiver|機械社區 ( 京ICP備10217105號-1,京ICP證050210號,浙公網安備33038202004372號 )
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