拉西瓦水电站机组座环、蜗壳焊接裂纹成因分析及处理措施
랍서와수전참궤조좌배、와각한접렬문성인분석급처리조시
Cause Analysis of Welding Crack of Stay Ring and Spiral Case of the Generating Units for Laxiwa Hydropower Station and Their Treatment Measures
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