Design standard of automobile body welding procedure affects the product quality and the cost greatly.
轿车四大工艺之一的车身焊接工艺，其设计水平对产品质量和成本有较大影响。
A study was made of the welding procedure for X70-L245 butt joint of pipeline steel.
针对不同强度级别的管线钢x 70和L245对接的焊接工艺进行了研究。
A study was made of the welding procedure for X70-L245 butt joint of pipeline steel.
针对不同强度级别的管线钢x 70和L245对接的焊接工艺进行了研究。
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