义词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
后预膜
的选择较少有
研究,而适当的预膜
化是防止酸后金属表面返锈的必要措施。
There is little study on the selection of liquid of pre - filming after the acid wash by hydroxy ethidine phosphonic acid (HEDP).
羟基乙叉二膦酸酸后预膜的选择较少有研究,而适当的预膜化是防止酸后金属表面返锈的必要措施。
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