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在电动桥式起重机的制造过程中,当焊接主梁及在主梁上焊接平台(走台)以后,主梁在水平或垂直面内会产生翘曲。
In the manufacture of electric overhead traveling cranes, the main girder warps in the horizontal or vertical plane when the main girder is welded and the platform is welded to the main girder.