用“circular seam”造句大全,circular seam造句 国语站 造句 1.57W 大中小设置文字大小 Coals are removed from circular seam of silo so that material section is increased and silo coal blockage is reduced.Analysis and countermeasures of overproof of the edge deviation of welding line in circular seam welding of boiler drum TAG标签:seam circular 造句 #