Geometrical optics approach can only calculate the high frequency approach solution of drilling bit vibration source wave equation in non caustic area but it become invalid in caustic area.

由于几何光学法求解钻头震源波动方程的高频近似解有局限性，即在焦散区失效，故只能计算非焦散区的高频近似解。

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Because of the decoupled approach we discussed above, this does not have an impact on the frequency with which the service request against the target can be executed.

因为使用了我们前面讨论过的完全分离的方式，所以这不会对针对目标的、能够执行的服务请求的频率产生影响。

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This approach to enter the special characters of some high frequency is very effective.

这种方法对输入某些出现频率较高的特殊字符非常有效。

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Anthem's true audiophile approach with ARC instead uses proprietary processing to compute each speaker's in-room frequency response and then computes a target frequency response for each to yield the optimal sound.

ENGADGET: Anthem makes a statement with its flagship D2v pre-pro HD