This paper presents a computer simulation model of the cardiovascular circulation system, which describes the blood flow dynamic law in the cardiovascular system by the state equation.
建立一种心血管循环系统的计算机仿真模型，即描述心血管循环系统内血流动力学变量变化规律的状态方程。
According to the law of conservation in the state of turbulent flow, the differential equation describing the airflow temperature distribution in drifting tunnel is derived.
根据紊流状态下的守恒原理，导出了描述掘进巷道风流紊流流动和温度分布的微分方程。
According to the principle of conservation, differential equation which can describe airflow temperature distribution in state of turbulent flow in mine working face is deduced.
从守恒原理出发，导出了描述矿井回采工作面风流紊流流动和温度分布的微分方程。
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