发布时间:2025-01-23 10:24:48
水泥压力板10mm厚耐火一小时。水泥压力板是在建筑用水泥压力板基础上改良配方和工艺,厚度从5mm到30mm间,10mm厚耐火一小时,25mm,30mm厚耐火约4个小时。
tpx6113镗床主轴抱死是什么原因偏心盘能转主轴能移动档位在空档是主轴也盘不动
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