On the base of hardware approach, to discuss all the theory involve in active detecting sonar system, including the selection of signal waveform, digital signal sampling, digital signal processing.

以硬件为基础，对所涉及到的理论都作论述，包括探测声纳的信号波形选择，数字信号采样、处理原理与方法。

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Sampling foreign foods is a highlight of many tourist itineraries but a particular group of rich Indians take a different approach to eating overseas; they bring along their own chefs.

品尝外国美食可是许多旅游行程的亮点，但有一群印度富人到国外就餐时，却采用了与众不同的方式：带上自己的厨师。

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Anew approach, named Modified Fast Fourier Transform (MFFT), is proposed to analyze the components of a periodic signal when sampling duration is not equal to an integer multiple of the fundamentals.

提出了一种改进的快速付立叶变换(MFFT)的计算方法，在采样的持续时间不是信号周期整数倍的条件下，能够准确地提供此信号中各周期分量的特性。

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Being able to process every item of data in reasonable time removes the troublesome need for sampling and promotes an investigative approach to data, in contrast to the somewhat static nature of running predetermined reports.

FORBES: Volume, Velocity, Variety: What You Need to Know About Big Data