7212| 12
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怎樣去除鉆孔毛刺,?請(qǐng)教 |
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點(diǎn)評(píng)
所以說(shuō)了解刀具對(duì)加工的速度,效果,,效率,,有著非常重要的意義,。
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本版積分規(guī)則
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