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| 后长; 背长 (B.L.); 后身长 (B.L.) | |||
| back length: 24 phrases in 8 subjects |
| Automobiles | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Geophysics | 1 |
| Metallurgy | 1 |
| Remote sensing | 1 |
| Space | 1 |
| Technology | 1 |
| Textile industry | 17 |
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