Frequency control the use of fans, water pumps, type of machinery to carry out speed control method to regulate the flow of energy conservation, economic efficiency is very important significance.
采用变频调速控制，对风机、水泵类机械进行转速控制来调节流量的方法，对节约能源，提高经济效益具有非常重要意义。
By using finite difference method, the derived equation was solved coupling with energy conservation equations.
利用有限差分法将该方程与能量守恒方程进行了耦合求解。
Based on principle of conservation of energy, the thermal field of concrete component can be gotten by the method of finite element.
混凝土构件温度场的计算可以根据能量守恒原理，采用有限元方法进行求解。
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