o/a缩写的意思

acc.cop. WMP ACG dz W.C. BDL USG N/U B.J.P.I.S PF UL vac CP GPH gym TAM CBL VLP LPH P. bend IB ID bldg. DS RM fxd EO Snafu AISI Bk. ESL TM XS PA PP P/T IAC NomCom PZG MSG eo BBQ o/a ac A/W s.c. WTS APC QFII q.v. Lab DEV MW CBF MIL n.e. prev d/w LIM