Test results showed that the optimized pickling process could clean oxide skin of weld surface in effect and improve pitting-resistance property greatly.

研究结果表明，采用本文中的酸洗工艺可以有效清除不锈钢焊缝表面的氧化皮，并改善其耐点蚀性能。

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This test piece shall be welded using the identical welding parameters as the original test and only weld metal impact test specimens shall be tested.

此试件应使用与原始试验相同的焊接参数进行焊接，并且仅对焊接金属冲击试样进行试验。

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The purpose of weld guide bending test is to detect plasticity of welding joint, welding process and surface defects of materials.

焊缝导向弯曲试验的目的是检查焊接接头的完好性和塑性以及材料的焊接工艺和表面缺陷。

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"The secret of a car's body being able to withstand the crash test are the weld spots, " he said.

NPR: AP IMPACT: Cars Made In Brazil Are Deadly