5420| 10
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CBN砂輪磨削問題 |
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點(diǎn)評
灌水也該有個基本水平吧!
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點(diǎn)評
1、CBN砂輪轉(zhuǎn)速7000rpm 算高嗎? 2、CBN砂輪轉(zhuǎn)速7000rpm 太高了吧!
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