The flux coatings major task is to vaporize and form a shielding gas to protect the weld puddle from nitrogen, hydrogen and oxygen.
通量涂料主要任务是蒸发，形成保护气体保护焊水坑由氮气，氢气和氧气。
The flux coatings major task is to vaporize and form a shielding gas to protect the weld puddle from nitrogen, hydrogen and oxygen.
通量涂料主要任务是蒸发，形成保护气体保护焊水坑由氮气，氢气和氧气。
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