reference environment conditions
вихідні умови довкілля
вихідні умови довкілля
contemporary operational environment / contemporary operating environment (COE)
operational environment (OE) (obsolete, see `operating environment`)
attitude-and-heading reference system / attitude and heading reference system (AHRS)
air defense ground environment
Allied Joint Doctrine for Recovery of Personnel in a Hostile Environment (AJP-3.7)
common operating environment (COE)
Environment and Security Initiative (ENVSEC) UN-OSCE-NATO initiative