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| 电弧法 | |||
| 电弧炉炼钢法 | |||
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arc process : 47 phrases in 6 subjects |
| Chemistry | 1 |
| Electronics | 3 |
| Metallurgy | 28 |
| Nautical | 2 |
| Technology | 11 |
| Welding | 2 |
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