клапан зворотний
check valve / non-return valve
non-return-flow wind tunnel
fuel-return valve (FRV)
spot check (spot- check)
non-interference; non-intervention
non-mandated non-governmental organization
non-directional beacon (NDB) / non directional beacon
ball check valve
brake vacuum check valve
baffle check valve
check valve
metering check valve
orifice check valve
swing check valve
actuator deceleration vent check valve
land return
return load
return to duty (RTD)
return fire
return to base (rtb)
return-to-base mode
brake shoe return spring
in return for information
vehicle casualty return
failure to return to battery
lump sum on return
oil return line
return port
return freight
return passage
return trip
return-flow wind tunnel