状态反馈与闭环过程的关系及许多基本的几何性质得到了详细的阐明；
The relations between state feedback and closed-loop process, and many essential geometric properties are expounded carefully.
真实性，具有真实的，可信赖的及真诚的性质或状态。
Authenticity n. The quality or condition of being authentic, trustworthy, or genuine.
本文提出了一个新的三参数流体状态方程，并给出了三个参数与流体临界性质及温度之间的关系式。
A new state equation with only three parameters is proposed. The expressions for correlating the parameters with the critical properties of the fluid and the temperature are derived.
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