All these and other developments show that welding is no longer what it was in time past, the simple matter of running a bead with a gas flame or a stick electrode.

所有这些和其他的新技术都显示焊接不再是过去那样，只用气体火焰或一根焊条焊一道焊缝的简单问题了。

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By using this process to repair castings, there is no obvious separating line, no slag inclusion and gas hole between the welding zone and base metal.

用此工艺焊补铸件，焊补区域与基体间没有明显的熔合线，无渣孔、气孔等缺陷。

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