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In the data object model approach, you need to first create the wrapper objects to encapsulate the customer and order data, as shown in Listing 1, Listing 2, and Listing 3.
按照数据对象模型方式，首先需要创建包装器对象来封装客户和订单数据，见清单1、清单2和清单3。
In this paper, the Kalman filter approach is used to accurately estimate the parameters of first-order model for the evaluation of roundness errors.
本文利用卡尔曼滤波方法精确地估计圆度误差评定中一阶模型参数。
Then refined GB approach and DCP approach are used to control first-order plus delay plant and high order plant as well.
并将改进的GB方法与DCP方法应用于一阶加纯延迟对象和高阶对象。
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