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prime energy | |||
primary energy resources | |||
primary energy (resources) | |||
primary energy | |||
primary energy sources | |||
primary energy resource | |||
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primary energy; primary energy source |
一 次 能源 : 6 phrases in 6 subjects |
Ecology | 1 |
Economy | 1 |
Electronics | 1 |
Forestry | 1 |
Refrigeration | 1 |
Technology | 1 |