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| 闭壳层; 封闭壳 | |||
| 闭合壳层; 满充壳层 | |||
| 闭壳; 填满壳层 | |||
| closed shell: 14 phrases in 5 subjects |
| General | 1 |
| Hydroelectric power stations | 2 |
| Metallurgy | 3 |
| Refrigeration | 3 |
| Technology | 5 |
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