发布时间:2025-02-01 00:00:44
淬火球墨铸铁轧辊通常使用CBN(立方氮化硼)砂轮进行磨削,因为CBN砂轮具有高硬度、高热稳定性和高耐磨性,能够适应高强度、高温度条件下的淬火球墨铸铁轧辊磨削需求。
广播音箱是属于定压吗或是定压定阻二用的怎么样区分定压和定阻音箱好像这个红色线输入电压100v
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