Thermal cycling is an important factor to determine structure and property of HAZ after welding.
热影响区的热循环是决定焊后热影响区组织和性能的重要因素。
By analyzing the effect of each factor on the welding quality, the optimal spot welding parameters of automobile steel plate can be selected easily.
通过分析各因素对电阻点焊质量的影响，可以方便地得到汽车用钢板电阻点焊的最佳工艺参数。
Thermal focusing is an important factor to influence the quality of laser welding.
热透镜效应是影响激光焊接质量的重要因素之一。
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