李家峡水电站4#机组调速系统管路的安装与焊缝处理

李家峡水电站4#机组调速系统管路的安装与焊缝处理的英文翻译

基本释义

• Installation and Weld Joint Treatment of 4%23 Unit's Speed Governing System Pipeline in Lijiaxia Hydraulic Power Station