15075| 16
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請問這樣測量硬度準確嗎 |
點評
已經(jīng)校對過,硬度計是準確的
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點評
已經(jīng)校對過,,硬度計是準確的,;
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點評
平躺端面太小,,估計外圓表面也只能這樣測
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點評
是的,,因為端面太小
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