Based on an analysis of the composition of drilling rig, characteristics of drilling process, and human features, a reliability model of man-machine control system for drilling process is established.

在全面分析钻井机械的组成、钻进过程的特点和人的特性的基础上，建立钻机钻进过程人机系统可靠性模型。

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To hide information in speech signal, which is a special kind of audio signals, one must consider the characteristics of human audio system.

语音信号作为一种特殊的信息隐藏载体，在其中进行信息隐藏时必须充分考虑人类的听觉特性。

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The cognitive study of language attempts at the language system and its operation and offers an explanation for the three basic human characteristics.

语言认知研究是语言的系统和系统操作的研究，是对系统三个人类本质属性的解释。

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