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。
By adding magnesium powder into the coating of electrode, the sulphurs removal in deposited metal was satisfactory.
电弧焊的焊条是由焊芯和药皮两个部分组成的。
Electrode for arc welding consists of the core and the coat.
手工电弧焊通常是指采用药皮焊条的手工焊接法。
The manual arc welding normally refers to the manual welding using coated electrode.
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