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标题: BS-3923-1-1986-Methods for ultrasonic examination of welds.-Part 1 [打印本页]

作者: pengyuewang 时间: 2017-2-20 17:39:18 标题: BS-3923-1-1986-Methods for ultrasonic examination of welds.-Part 1

BS-3923-1-1986-Methods for ultrasonic examination of welds.
-Part 1 Methods for manual examination of fusion welds in ferritic steels

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作者: admin 时间: 2017-2-21 08:45:48

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