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成昆线金江至广通段的桐模甸、米苴、安乐村三座钢桥的部分活动支座,由于安装偏斜,须予整正。曾有过两个整正方案:一、移动
Part of the movable supports of the three steel bridges of Tongmiandian, Mianyan and Anle villages in the Jinjiang-Guangtong section of the Cheng-Kun line are to be rectified due to the installation skew. There have been two rectification programs: First, move