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| Russian | English |
| выведение на орбиту с увеличением скорости от нулевой до числа М=25 | zero-to-Mach 25 ascent |
| 25-компонентное световое табло | five-by-five light matrix |
| правило 25 лет | 25-year rule (Campaign for new requirements via national laws that would follow "model laws" for de-orbit satellites to meet 25-year rule (or better) for satellites at end-of-life AllaR) |
| разгонять до числа М=25 | accelerate toward Mach 25 |
| разгоняться до числа М=25 | accelerate toward Mach 25 |