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| проверка отсутствия утечек | |||
| проверка герметизации; проверка утечки | |||
| проверка на герметичность; проверка герметичности; проверка на плотность | |||
| 密封 性检查: 5 phrases in 4 subjects |
| Electronics | 1 |
| General | 1 |
| Nuclear and fusion power | 1 |
| Technology | 2 |
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