 |
| |||
| 弧 | |||
| 闭面 | |||
| 球面 | |||
| |||
| 球面; 球率曲面 | |||
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сферическая поверхность : 10 phrases in 4 subjects |
| Drilling | 1 |
| General | 5 |
| Oceanography & oceanology | 1 |
| Technology | 3 |
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