给出了一个新的用于线性时变参数结构系统模态参数识别的基于固定长度平移窗投影估计的递推子空间方法。
A novel recursive subspace method is developed based on fixed length moving window (FLMW) projection approximation used for estimating the modal parameter of linear time-varying structural system.
要把数据表中的相似重复记录标识出来，常用的方法是先将所有记录按照某个关键字进行索引，然后在一个固定长度的窗口范围内进行记录的两两比对。
The common approach of marking the approximately duplicate records is that a pair of records are compared in a window with fixed length after these records are indexed by a certain keyword.
要把数据表中的相似重复记录标识出来，常用的方法是先将所有记录按照某个关键字进行索引，然后在一个固定长度的窗口范围内进行记录的两两比对。
The common approach of marking the approximately duplicate records is that a pair of records are compared in a window with fixed length after these records are indexed by a certain keyword.
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