- X-axis perpendicular to orbit plane
- XPOP, X-axis perpendicular to orbit planeось Х по нормали к плоскости орбиты
English-Russian dictionary of program "Mir-Shuttle". С.В. Курбатов.. 2015.
X-axis perpendicular to orbit plane
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celestial mechanics — the branch of astronomy that deals with the application of the laws of dynamics and Newton s law of gravitation to the motions of heavenly bodies. [1815 25] * * * Branch of astronomy that deals with the mathematical theory of the motions of… … Universalium
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