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| исследовательское испытание | |||
| исследовательские испытания | |||
исследовательские испытания (Испытания, проводимые для изучения определенных характеристик свойств объекта  cntd.ru Natalya Rovina) | |||
| investigation test: 3 phrases in 2 subjects |
| Aerohydrodynamics | 2 |
| Astronautics | 1 |
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