labeling operational rules

AR rules analysis rules

GT selection rules (=Gamow-Teller selection rules)

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