The content in this paper involve theory and practicability, and can provide directly reference for engineering.

本文内容具有坚实理论基础和实用性，可直接为工程提供参考。

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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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These misleading theories involve the base of the theory of object of litigation, if it is not corrected immediately, the theory of object of litigation may enter into "the blind alley".

这些误区涉及诉讼标的理论之根本，如不尽快纠正将会导致诉讼标的理论进入“死胡同”。

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Most of them involve a theory arguing that the company wants to work with content producers to deliver an a la carte cable service that would provide a greater choice to consumers.

FORBES: Apple Testing Large-Screen High-Resolution TV Concept

However, theory has held that such novae do not involve such cataclysmic processes that give rise to gamma rays.

BBC: Gamma rays from nova explosion surprise astronomers

Under this theory, a president's obstruction and perjury must involve concealment of official actions.

CNN: Transcript: Judiciary Committee impeachment hearing