One of the most common digital-signal-processing techniques is the discrete Fourier transform (DFT), which breaks a signal into its component frequencies and can be represented as a matrix.

最常见的数字信号处理技术之一是离散傅立叶变换（DFT），它把一个信号分解成它的组成频率，并表示成一个矩阵。

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However, after a very long time the component associated with the discrete spectra becomes dominant, and the results obtained by WKB method might no longer be valid.

但当在经过很长时段之后，由于和离散谱部分相对应的扰动占主要地位，WKB方法所得结论可能不再成立。

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In many cases, only a complicated discrete component schematic is provided by the manufacturer.

在许多情况下，厂家提供的只是复杂的分立元件原理图。

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This series adopts a discrete component configuration that separates the display section from the tuner section, and these two sections can be connected with a cable or by using an optional wireless video transmitter unit that employs AMIMON's WHDI technology.

ENGADGET: Sharp's X-Series LCD HDTVs offered with WHDI wireless link