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检振器 : 32 phrases in 14 subjects |
| Air defense | 1 |
| Business | 1 |
| Compressors | 1 |
| Drilling | 1 |
| Electronics | 1 |
| General | 3 |
| Hydroelectric power stations | 1 |
| Information technology | 1 |
| Nautical | 1 |
| Oil / petroleum | 3 |
| Plastics | 1 |
| Rail transport | 1 |
| Space | 1 |
| Technology | 15 |
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