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| topographic leveling line; topographical levelling line | |||
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测准线 : 32 phrases in 9 subjects |
| Athletics | 1 |
| Aviation | 1 |
| Electronics | 2 |
| Geophysics | 2 |
| Metallurgy | 2 |
| Oil / petroleum | 1 |
| Space | 2 |
| Technology | 20 |
| Telecommunications | 1 |
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