恒定

Finally, the inability to make the storage curve of four parameters by the theory of unsteady flow is discussed and the conclusion that it is unnecessary to offer the storage curve of parameters to flood routing computation by the computer method of unsteady flow is reached.

文章最后还就用非恒定流理论制作四参数库容曲线的不可行性及用非恒定流电算方法为调洪演算提供多参数库容曲线的不必要性等问题进行了讨论。

Since only when the output SNR is constant can the probability of detection be kept stable along with a desired false alarm rate, the goal of the threshold detector is to maintain a constant output SNR by using the non-coherent combination.

因为只有当输出信噪比恒定时，才有可能在虚警概率恒定的同时也保证检测概率稳定，所以这个门限监测器的目的就是要通过非相干累加来实现累加后的等效信噪比的恒定。

Based on the second law of thermodynamics, irreversible analysis of forced convective heat transfer through a duct including thermal entrance region is made on the condition of constant wall heat flux and constant wall temperature respectively.

利用热力学第二定律，分别在壁面热流恒定和壁面温度恒定两种情况下，在考虑热进口段时对管内对流换热过程进行了热力学分析。