см. проведение научных экспериментов
The cosmonauts spent about an hour in open space, during which time they performed a number of scientific experiments and observations.
см. проведение научных экспериментов
The cosmonauts spent about an hour in open space, during which time they performed a number of scientific experiments and observations.
Русско-Английский словарь идиом по космонавтике. Russian-English dictionary of idioms on cosmonautics. 2012