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| 熔合区 | |||
| 熔化带; 熔化区 | |||
| 母材熔合区 | |||
| 熔融带; 熔合部; 熔焊区; 熔透区 | |||
| fusion zone: 9 phrases in 3 subjects |
| Metallurgy | 4 |
| Space | 2 |
| Technology | 3 |
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