narroe band cdmanarrownarrow band axisnarrow band frequency modulationnarrow band modulationnarrow band pass filternarrow base diodenarrowbandnasanational aeronautics and space adminstrationnational electrical codenational electrical manufacturers associationnational institute of standards and technologynational television system committenato identification systemnaturalnatural circulationnatural dampingnatural excitationnatural frequencynatural lightnatural ltgaritmnatural modenatural oscillationnatural radioactivitynatural responesnatural stabilitynatural vibrationnatural wavelengthnautical milenautilusnavigationnavigation aidnavigation beaconnavigation satellitenavigation way pointnavstarnavstar satellitenbncndnd yag laser yag laserndronenearnear earth asteroid rendezvous spacecrarftnear end crosstalknear far effectnear fieldnear infrared
