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| direct amplification | |||
| direct enlargement; straight amplification | |||
| 直接 放大: 18 phrases in 9 subjects |
| Air defense | 2 |
| Aviation | 1 |
| Business | 1 |
| Electronics | 3 |
| General | 2 |
| Geophysics | 1 |
| Information technology | 2 |
| Metallurgy | 1 |
| Technology | 5 |
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