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运用恒电量测试技术研究了碳钢在循环冷却水预膜处理阶段金属腐蚀速率的变化，建立了相应的等效电路模型，为水处理预膜质量的评定提供了一种新的技术手段．
The change of metal corrosion rate of carbon steel during pre-treatment of circulating cooling water was studied by using constant-charge test technique. Corresponding equivalent circuit model was established, which provided a new technical measure for the quality assessment of water pre-film.