4133| 9
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內(nèi)圓磨磨出內(nèi)空中間凹,,從未遇到這種情況,! |
評(píng)分
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點(diǎn)評(píng)
砂輪架下面的直線導(dǎo)軌不好了,,磨出來(lái)的光潔度還會(huì)好嗎?
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