scope and frequency of inspection
...6 Non-destructive testing of welds (NDT) 焊缝的无损探伤 14.3.6.1 Scope and frequency of inspection 焊缝检验的范畴和比率 Visual inspection shall be carried out at all welds by a qualified welding inspector (see clause 14.3.6.3).
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scope and frequency of inspection
检查的范围和频率
以上为机器翻译结果，长、整句建议使用 人工翻译 。