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采用涂层法进行了叶轮的磨损形貌分析，即对叶轮、盖板分别涂以３层不同颜色的特殊涂料，通过拍照分析，研究磨损规律。
The wear morphology of the impeller was analyzed by the coating method. That is, three layers of special coatings were applied to the impeller and the cover respectively. Through the photographing analysis, the abrasion regularity was studied.