... Continuous welded rail factory 长焊钢轨场 continuous welded track 无缝线路 continuously welded rail 焊接长钢轨 ...
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continuous welded rail track 无缝线路钢轨
continuous welded track
连续焊接轨道
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Grey spot has become the most conspicuous defect in resistance welding joint of the structure of continuous welded rail track.
灰斑已成为无缝线路钢轨结构接触焊接头最突出的缺陷。
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