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Arc welding safety 图文百度文库2011


处理及排版技巧交流分享_

2018630, 处理及排版技巧交流分享怜1 处理及排版技巧交流分享最常见的几种字体1 :字是印刷行业应用得最为广泛的一种字体,...


en_6892_K_ed3(Welding classes and quality levels for ... -

, en_6892_K_ed3(Welding classes and quality levels for arc welded joints of steel), 6885 K (ISO 4063): 11 metal-arc welding without gas protection; .... 3 Cracks Crater crack Porosity and gas pores 100 104 2011 2012 2014 2017 ...... .



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