fixed structure短语¹⁴⁴⁹⁷²⁺² 基本例句 固定结构 This method has high precision and can avoid the shortcomings of long time testing and only for fixed structure low order models that most relay identification methods do. 该方法辨识精度高，同时可以有效避免大多继电反馈辨识方法测试时间过长及只能辨识固定的低阶模型的缺点。 cnki