发布时间:2025-02-03 16:58:55
先用粗号砂纸打磨一遍
去油漆店买抹缝的油灰抹缝
干后 用中号砂纸打磨2--3遍
买好的耐磨清漆刷一遍 隔1-2天干透了用细砂纸打磨2--3遍
把浮灰用干布擦干净 再罩一层清漆 就好了
浮头式换热器的cad图2管程单壳程共142根管及管子排列的剖面图
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