Discrete Procedure Approximation
Galerkin approximation procedure
stochastic approximation procedure
Successive Approximation Procedure
(PPAP) production part approval procedure
Examination and approval procedure
procedure of application and approval
stationary state approximation; steady state approximation
steady state approximation; stationary state approximation
(distorted)-wave Born approximation
16-moment approximation
accelerated stochastic approximation
accuracy of approximation
acoustic synthesis approximation
Adaptive Cross Approximation
adiabatic approximation
adiabatic approximation in statistical mechanics