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| 质量当量 | |||
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mass equivalent : 12 phrases in 7 subjects |
| Automobiles | 1 |
| Explosives and Explosive Ordnance Disposal | 1 |
| Oil processing plants | 1 |
| Rail transport | 1 |
| Refrigeration | 1 |
| Technology | 6 |
| Wind Energy | 1 |
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