一个宇宙飞行员希望确定出他接近月球时的逼近速度。
A space navigator wishes to determine his velocity of approach as he nears the moon.
RBF神经网络模型的收敛能力和逼近速度优于BP神经网络模型。
The RBF neural network model has better convergence ability and impending speed than the BP neural network model.
其次，分析了逼近模型，推导了单圆弧逼近方法，用这一方法来逼近叶片曲面，提高了逼近速度。
Secondly, analysed the approach model, described circular arc approximation method, approaching blade curved surface with this method and realized raise of the approach speed.
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