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| 翻板式阀; 翼门阀; 瓣阀; 止回阀; 翻板式阀瓣阀; 翻板式活门; 球门自动活门 | |||
| откидной клапан: 8 phrases in 2 subjects |
| Electronics | 7 |
| General | 1 |
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