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磨具-用以磨削、研磨和抛光的工具。大部分是用磨料加上结合剂制成的人造磨具，也有用天然矿岩直接加工成的天然磨具。-moju</br> generated by yvsou girl
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(28.56701.236.7261.7289.7522)
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(28.56701.236.7261.7289.7522)