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1·Contact mark. Intermittent marks adjacent to the weld line resulting from the electrical contact between the electrodes supplying the welding current and the pipe surface.

触点痕。由于供焊接电流的电极与管子表面间的电接触，致使在焊缝线附近产生不连续痕迹。

2·Also, improve the overlapped length of the tail frame and the frame and change the welding seam into intermittent seam, therefore the frame strength can be effectively increased.

改善尾架与车架的搭接长度，将连接焊缝改为断续焊缝，从而有效地提高了车架的强度。

3·Single sided -, intermittent -, chain - or zigzag welding will be allowed, as far as permissible according to the classification society, where structural parts are not exposed to weather or moisture.

可采用单面焊，间断焊，并列焊或交错焊，根据船级社要求，结构件不要暴漏在露天或潮湿处。

4·Also, improve the overlapped length of the tail frame and the frame and change the welding seam into intermittent seam, therefore the frame strength...

改善尾架与车架的搭接长度，将连接焊缝改为断续焊缝，从而有效地提高了车架的强度。

5·This article introduces weld formation of low carbon steel, stainless steel and al alloy by TIG welding in longitudinal intermittent alternative magnetic field.

研究了间歇交变纵向磁场TIG焊接不同材料(低碳钢、不锈钢和铝合金等)的焊缝成形。