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| баллон со сжатым гелием | |||
| гелиевый баллон | |||
| бак для азота; балкон для азота; азотный баллон; баллон с азотом | |||
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氮 气 瓶 : 3 phrases in 2 subjects |
| Nuclear and fusion power | 1 |
| Technology | 2 |
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