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| 液体渗碳法 | |||
| 液体渗碳; 液体增碳; 熔池增碳; 液体渗【增】碳 | |||
| bath carburizing: 4 phrases in 3 subjects |
| Automobiles | 1 |
| Metallurgy | 2 |
| Technology | 1 |
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