wielding line的用法和样例：
例句
- Variations in the properties of the weld occurring at short regular intervals along the weld line due to repetitive variation in welding heat.
由于焊接热量周期变化，使得沿焊缝线每一固定的小间距焊缝的性能出现周期性变化。 - The research and application of Tailor-welded blanks with curvilinear-weld line is relatively few and its forming regularity is indistinct in this field.
摘要目前对于曲线焊缝拼焊板的研究和应用还比较少，对其成形规律还不清楚。
