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| 表面弯曲试验 | |||
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| 正面弯曲试验 | |||
| 表面弯曲试验; 焊缝的正弯曲试验; 面弯试验 | |||
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face -bend test : 3 phrases in 2 subjects |
| Metallurgy | 2 |
| Technology | 1 |
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