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显色管 : 59 phrases in 11 subjects |
| Air defense | 1 |
| Aviation | 2 |
| Business | 1 |
| Construction | 2 |
| Electronics | 4 |
| General | 15 |
| Metallurgy | 2 |
| Radio | 1 |
| Space | 4 |
| Technology | 24 |
| Telecommunications | 3 |
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