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垂 直仪 : 56 phrases in 12 subjects |
Acoustics | 1 |
Agriculture | 1 |
Aviation | 11 |
Earth sciences | 5 |
Engineering geology | 2 |
Geophysics | 3 |
Nautical | 1 |
Oil / petroleum | 3 |
Rail transport | 1 |
Space | 7 |
Technology | 20 |
United Nations | 1 |