seamn.缝;接缝vt.缝合;接合;使有纹vi.有裂缝
Seam quality焊缝质量
seam gateway煤巷
seam outcrop煤层露头
seam welding缝焊,缝悍,线焊接,滚焊
seaming roll卷封滚轮
seaming head卷边封头
seam turbine汽轮机
seam binding滚滚条
seam machine接缝机
seam opening揭煤