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| 自由旋涡; 自由涡自由旋涡; 尾随涡流 | |||
| 自由涡流; 自由涡; 点涡 | |||
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свободный вихрь : 19 phrases in 3 subjects |
| General | 6 |
| Oil processing plants | 2 |
| Technology | 11 |
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