2280| 3
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外圓磨砂輪夾盤是什么材料,? |
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點(diǎn)評(píng)
機(jī)床原件不都是鑄鐵嗎?
你為何要選擇鑄鐵,?高速旋轉(zhuǎn)件要滿足相應(yīng)的機(jī)械性能,。
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