W/B缩写的意思

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