оператор Стокса (описує рух в'язкої ньютонівської рідини)
air traffic control operator
control tower operator
early warning system (EWS) operator
identification operator
operator control unit (OCU)
operator maintenance
operator’s pack
operator's permit
ship operator
telephone operator
radio telephone operator (RTO)
aiming rule operator
azimuth (deflection) display board operator
control post operator
vertical control operator
fire-control operator
navigator-radio operator
air operator certificate
aircraft operator
airport operator
flight operator
flight radio operator
flight systems operator
operator communication
radar operator
traffic operator
operator
radio operator
analytic equipment operator
height-finder operator
range finder operator
operator training