acceptance of notice of acceptance
Acceptance Test， Acceptance Trial
Abnormal Operational Phenomenon
abnormal operational transient
AD811 operational amplifier
add and subtract operational circuit
administrative and maintenance message operational
air defense operational proposal
air force operational combat
air operational communications network
Aircraft operational availability
analog operational unit
analysis of operational capability requirement
analysis on operational characteristic
and operational concept
Annual operational costs
Anterior operational approach
anticipated operational occurrence
anticipated operational occurrences