A model for dynamic analysis on a whole hydroelectric machine system was studied by multiple step mode synthesis technique, which consists of rotary and fixed components.

采用多级模态综合技术并利用结构旋转对称的特点，建立包括转动部件和固定部件在内的水轮机整机系统动力特性分析模型。

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The reaction took place in the fixed bed reactor. By using steady state model, each step kinetic parameter in the reaction net was acquired.

反应是在固定床的条件下进行的，通过建立稳态反应模型，求出了异构化反应网络中的每一步动力学参数。

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There may be a singularity in the solution. If the model is correct, try reducing the step size (either by reducing the fixed step size or by tightening the error tolerances).

可能在求解的过程中出现奇异，你可以试着把仿真步长降低，再试试。

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