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| British thermal unit (Btu) | |||
| 英热量单位: 16 phrases in 10 subjects |
| Animal husbandry | 1 |
| Automobiles | 2 |
| Desert science | 1 |
| Earth sciences | 1 |
| Electronics | 2 |
| Engineering geology | 1 |
| Metallurgy | 3 |
| Oil / petroleum | 1 |
| Space | 2 |
| Technology | 2 |
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