standard welding symbols 标准焊接符号 stationary welding machine 固定焊机;固定式焊机 steel wire for welding electrode 焊条钢丝 steel-welding fittings 钢焊接管件 step by step roller spot welding 步进式滚点焊 step by step s
In the foregoing description and in the accompanying drawings, specific terminology, equations and drawing symbols are set forth to provide a thorough understanding of the present technology. In some instances, the terminology and symbols may imply specific details that are not required to practice the...