higher order model

• 高阶模型

higher order model的用法和样例：

例句

1. Then the high order model was reduced by the modal aggregation method.
   采用模态集结法对其高阶模型进行降阶。
2. The time domain and frequency domain analysis methods were used to verify the simplified model of the Nimu arch bridge in Tibet as an example.
   以西藏尼木大桥作为算例，通过频域分析和时域分析来验证降阶模型的有效性。