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| 陶瓷密封; 陶瓷封接 | |||
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ceramic seal : 14 phrases in 7 subjects |
| Aviation | 2 |
| Chemistry | 1 |
| Electronics | 1 |
| Lighting other than cinema | 1 |
| Metallurgy | 1 |
| Space | 3 |
| Technology | 5 |
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