downhand electrode

• 平焊焊条

downhand electrode的用法和样例：

例句

1. By adding magnesium powder into the coating of electrode,the sulphurs removal in deposited metal was satisfactory.
   通过理论分析及实验，探讨了手工电弧焊焊条药皮中添加金属镁粉的脱硫效果。