拉弧是指开关绝限断开电流的最大能力。
属于拉弧式电弧螺柱焊焊枪，焊接质量好，重量轻，操作方便。
Draw arc stud welding gun makes high welding quality, with light weight and convenient operation.
看看你能否完成像拉弧圈或对攻这样的好球，比赛一定要有竞争性。
See if you can execute genuine shots like loops or counter drives, and play the matches competitively.
紫铜电极相比石墨电极能有效避免拉弧现象，产生稳定的电火花放电；
The copper dressing electrode is preferred to plumbago one as it will result in unstable discharge between the two electrodes.
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