резерв часу
open burning and open detonation (OBOD) (= open-pit)
open country / open ground
zone standard time (zone time) (ZST)
time to climb / climb time
time-gain control / gain time control
real time kinematic / real-time kinematic (RTK)
takeoff time (T time)
break-open
open arrest
open attack
open barrel sight
open boat
open column
open emplacement
open fire
open flank
open formation
open hostilities
open order
open out
open position
open range
open route
Open Skies Treaty
open source intelligence (OSINT)
open submarine warfare
open weapon emplacement
open wire
open work
open wound
open-source information
take to the open