1、
application of double wire saw procedure to the high level construction steel structure
双丝埋弧焊工艺在高层建筑钢结构上的应用
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2、
welding procedure of automatic gmaw in inside groove and saw in outside groove of shell
筒体内侧坡口自动GMAW外侧坡口SAW焊接工艺
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3、
