- seam煤层
welding seam 焊缝；对接焊缝
weld seam 焊缝
thin seam 薄煤层
welded seam 焊缝；熔接缝
seam welding [化]缝焊
side
- seamedthin seam 薄煤层
welded seam 焊缝；熔接缝
seam welding [化]缝焊
side seam 侧缝；侧骨；摆缝；水平焊缝
longitudinal seam 纵接缝；
- seams seam 薄煤层
welded seam 焊缝；熔接缝
seam welding [化]缝焊
side seam 侧缝；侧骨；摆缝；水平焊缝
longitudinal seam 纵接缝；纵向
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