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кислородно-водородный разгонный блокstresses
astronaut. oxygen/hydrogen upper stage (MichaelBurov); oxygen-hydrogen transfer orbit stage (MichaelBurov); O2/H2 upper stage (MichaelBurov); oxygen-hydrogen TOS (MichaelBurov); KVRB (MichaelBurov); oxygen/hydrogen booster (MichaelBurov); O2/H2 booster (MichaelBurov)