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[讨论] 换热器管板与壳程焊缝的打底焊,母材为不锈钢 |
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发表于 2014-3-14 09:08:16
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发表于 2014-3-14 11:05:31
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发表于 2014-3-14 16:03:12
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发表于 2014-3-14 22:07:27
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