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| U形坡口; 带钝边U形坡口 | |||
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| X形坡口 | |||
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| 双单边V形坡口 | |||
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| 双V形坡口 | |||
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образная разделка : 9 phrases in 2 subjects |
| General | 7 |
| Metallurgy | 2 |
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