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| 焊接未熔合 | |||
| 未熔合 | |||
| 未完全熔合 | |||
| 欠焊〈焊接缺陷〉 | |||
| 不完全焊透 | |||
| 熔化不良; 熔合不良; 熔化不全; 焊接熔化不良; 未焊透 | |||
| lack of fusion: 5 phrases in 2 subjects |
| Metallurgy | 1 |
| Technology | 4 |
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