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能源节约 | |||
能源经济 | |||
能源经济学 | |||
动能经济 | |||
能量节约 | |||
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能量经济性; 节能 |
energy economy : 11 phrases in 9 subjects |
Business | 1 |
Consulting | 2 |
Earth sciences | 1 |
Ecology | 1 |
Economy | 1 |
Explosives and Explosive Ordnance Disposal | 1 |
International trade | 1 |
Technology | 1 |
United Nations | 2 |