作业帮英语翻译本课程主要学习：焊接电弧的引燃过程；焊接电弧的构造及表特性；焊接电源的极性、应用及电弧的稳定性；焊接电弧的偏吹；预热、后热、焊后热处理及提高手工电弧焊生产的途
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英语翻译本课程主要学习：焊接电弧的引燃过程；焊接电弧的构造及表特性；焊接电源的极性、应用及电弧的稳定性；焊接电弧的偏吹；预热、后热、焊后热处理及提高手工电弧焊生产的途
英语翻译
本课程主要学习：焊接电弧的引燃过程；焊接电弧的构造及表特性；焊接电源的极性、应用及电弧的稳定性；焊接电弧的偏吹；预热、后热、焊后热处理及提高手工电弧焊生产的途径.电弧焊的熔滴过渡；焊接接头型式和焊缝型式；引弧和方法；焊缝的起头、收尾及连接；焊接工艺参数、焊缝结晶及焊接接头的显微组织；焊缝中的气孔和焊接时的裂缝产生的原因、防止措施及处理方法.
英语翻译本课程主要学习：焊接电弧的引燃过程；焊接电弧的构造及表特性；焊接电源的极性、应用及电弧的稳定性；焊接电弧的偏吹；预热、后热、焊后热处理及提高手工电弧焊生产的途
Major contents of this course: Ignition process of welding arcs; structure and surface characteristics of welding arcs; polarity and applications of welding power and stability of electric arcs; welding arc blow; pre-heating, post-heating, post-welding thermal treatment and the methods of improving manual production of welding arcs; droplet transfer of welding arcs; types of welding joints and welding seams; arc striking and related methods; starting, ending and connection of welding seams; welding process parameters; microstructure of welding seam solidification and welding joints; causes for, preventive measures against and handling of air pores in welding seams and cracks in welding.