... laying-in point 衬垫区 laying-in c 衬经衬纬圆纬机 laying-in lapping movement 衬纬垫纱运动 ...
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laying-in c
衬垫c
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The rail welding plays an important role in the engineering of laying continuous welded railway (c WR), and decides the quality of rail tie-in directly, which has great influence on railway security.
钢轨焊接是无缝线路建设工程中的关键环节，它直接决定了钢轨接头的质量，从而对铁路安全有重要影响。
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