山美水电站3号机组上导轴承旋转油槽盖板磨损毁坏原因分析及处理措施
산미수전참3호궤조상도축승선전유조개판마손훼배원인분석급처리조시
Analysis of reasons for Shanmei Hydropower Station No.3 unit bearing swivel upper oil drain pan cover plate abrasion damage and handling measures
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