For multilayer welding on steels, pulsed arc welding is recommended.
在多层钢加层焊时建议使用脉冲电弧焊。
For multilayer welding on steel, pulsed arc welding is recommended-also appropriate for oven soldering.
建议在钢材多层焊时使用脉冲电弧焊，也适合于炉焊。
It is an effective way to improve the properties of HAZ by adopting multilayer welding and technical weld.
多层焊和工艺焊缝是改善HAZ性能的有效途径。
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