(ркт) період роботи двигуна, період горіння; період активного польоту
base period
initial period of war
inter-look dormant period (mines)
launch period
monsoon transition period
period of crisis
period of tension
period of threat
practical training period
prior period adjustments
reporting period
savings on prior-period obligations
warmup period
change-over period
concentration period
in the period in which the communications channel has been open
inaction period
heating period of the engine
intake period
frequent reserve maintenance period
induction period
mixing period
representative time period
long-period forecast
orbital period
short-period forecast
active duty training period
gas сompound period
for period of weep
for weep period
scan period
radio alert period