（强）f-共逼近
strongly)(f-) coapproxi-mation
strongly) f-coapproximation
BP神经网络逼近
BP neural network approximation
Camp-Paulson逼近
Camp-Paulson approximation
Cantrbury逼近
Hermite-Pade approximation
Chebyshev-Pade逼近
Chebyshev-Pade approximation
Chebyshev多项式逼近法
Chebyshev polynomial approximation
Chebyshev拟谱逼近
Chebyshev pseudospec- tral approximate
Chebyshev pseudospectral approximation
Cramer-Lundberg逼近
Cramer-Lundberg approximation
dfBM的dsBM多角形逼近
polygonal approximation of dfBM
Dvoretsky随机逼近定理
Dvoretsky’s stochastic approximation theorem
Esseen型逼近
Esseen-type approximation
e逼近算法
e-approximation algorithms