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&ensp;&ensp;&ensp;&ensp;电弧焊是以电弧为热源来熔化和连接金属的焊接方法。在电极和工件间引燃电弧，电极用手工或机械方式沿焊缝移动，或者工件在电极下方移动，高温移动的电弧使接头熔化，冷却结晶形成永久连接。。下面小编给大家分享电弧的构造及热与温度的分布，希望能帮助到大家。 电弧的构造及热与温度的分布文档下载网址链接：</div></div><div class=\"download_card_btn download_card_btn_lb\"><div class=\"content_box_tj\"><span>推荐度：</span><img src=\"/skin/zhann/images/icon_star.png\" alt=\"\">	<img src=\"/skin/zhann/images/icon_star.png\" alt=\"\">	<img src=\"/skin/zhann/images/icon_star.png\" alt=\"\">	<img src=\"/skin/zhann/images/icon_star.png\" alt=\"\"></div><div class=\"downlod_btn_right demo_tc downlod_btn_right_lb\"><em class=\"downlod_icon\"></em>点击下载文档<span>文档为doc格式</span></div> </div></div></a>';
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