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| сферическая повёрхность | |||
| поверхность постоянной положительной кривизны | |||
| сферическая поверхность | |||
| шаровая поверхность | |||
| surface sphérique: 7 phrases in 4 subjects |
| Mathematics | 2 |
| Mechanic engineering | 2 |
| Physics | 1 |
| Welding | 2 |
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