NB缩写的意思

AC SP PM ISSC M/F SLS c/- ASR OHC IMC ST TAP D/R HB/L B/N SCR f.0.w. VASI SA ATC C.I.F.E. 1PPM FAS APC NB OX1 CCD CL TDOP TVO CCL RTCM TFV f.i.o.s. HPF CVT MPFI VICS BIMCO S/O FPA HAI VRCV SSS UHVI C/E TCLU SUV HO EBD MCS MPI AMI AFR HERMES DT&E MIL S/P f.i.w. RC