樓主: 小馬過(guò)河
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請(qǐng)教:直徑1mm小孔如何加工? |
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點(diǎn)評(píng)
大俠,高速鉆是什么意思?能否說(shuō)詳細(xì)些?
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點(diǎn)評(píng)
可否提供些資料?
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