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着重介绍了目视检验在整个焊接检验的重要性及必要性,以及焊接检验员对焊前、焊中、焊后如何对焊缝质量进行控制及检验。
The importance and necessity of visual inspection in the whole welding inspection are emphatically introduced, and how the welding inspector controls and tests the quality of the weld before, during welding and after welding.