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气屏蔽 : 23 phrases in 10 subjects |
| Automobiles | 3 |
| Cables and cable production | 1 |
| Ecology | 1 |
| Electric machinery | 4 |
| Electronics | 4 |
| Hydroelectric power stations | 1 |
| Metallurgy | 3 |
| Oil / petroleum | 1 |
| Space | 2 |
| Technology | 3 |
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