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| электронная лампа | |||
| вакуум-клапан | |||
| вакуумный клапан | |||
| 真 空 阀: 24 phrases in 6 subjects |
| Automated equipment | 2 |
| Aviation | 3 |
| Drilling | 1 |
| Electronics | 2 |
| General | 9 |
| Technology | 7 |
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