Ratio of stem + leaf to grain
the ratio of stem to leaf
increment of angle of internal friction
phase angle {angle of phase difference}
variation of angle of attack
the basal part of stem of Panax notoginseng
absolute angle of attack
access angle of the aluminium inserted telescope
accuracy of angle measurement
accuracy of angle observation
action-angle-angle transformation
Advance angle of fuel injection
Advance Angle of Fuel Supply
advanced angle of beginning of injection of diesel pilot
aerodynamic angle of attack