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| displacement measurement | |||
| 位移量 测: 25 phrases in 8 subjects |
| Air defense | 1 |
| Aviation | 4 |
| Earth sciences | 2 |
| Electronics | 2 |
| Geophysics | 1 |
| Shipbuilding | 2 |
| Space | 2 |
| Technology | 11 |
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