дозівний зворотний клапан
metering valve
check valve / non-return valve
non-return valve / check valve
spot check (spot- check)
metering accuracy
bleed-off metering system
fuel pump metering mechanism
air-flow metering unit
main metering carburetor system
metering
metering jet
metering orifice
metering pin
metering unit
fuel-metering
ball check valve
brake vacuum check valve
baffle check valve
check valve
orifice check valve
swing check valve
actuator deceleration vent check valve
check sweeping
function check
maintenance check
radio check
routine check
security check
vehicle check-point
fleet operational readiness accuracy check sites (FORACS)
loalty check
NATO Naval Forces Sensors and Weapons Accuracy Check Sites