There is little study on the selection of liquid of pre - filming after the acid wash by hydroxy ethidine phosphonic acid (HEDP).
羟基乙叉二膦酸酸洗后预膜液
选择较少有人研究,而适当预膜钝化是防止酸洗后金
表面返锈必要措施。
There is little study on the selection of liquid of pre - filming after the acid wash by hydroxy ethidine phosphonic acid (HEDP).
羟基乙叉二膦酸酸洗后预膜液选择较少有人研究,而适当预膜钝化是防止酸洗后金表面返锈必要措施。
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