For integer ratio conversion, the filters would be time-invariant, but for fractional ratio conversion, the filters would be time-variant whose structure is more complex.
实现整数倍采样率转换可以采用时不变滤波器，然而实现分数倍采样率转换一般需要采用较复杂的时变滤波器。
A methodology to assess the time-variant reliability of the primary ship structure with hull girder degradation of corrosion is analyzed.
分析一种船体腐蚀影响下随时间变化的船体结构可靠性计算方法。
In this paper, it represents a new technique of designing state observers with the variable structure system method (VSS) for linear time-in-variant systems.
本文介绍了用变量结构系统法(VSS)设计线性状态观测器的新方法，它与传统状态观测器的设计方法不同。
In this paper, it represents a new technique of designing state observers with the variable structure system method (VSS) for linear time-in-variant systems.
本文介绍了用变量结构系统法(VSS)设计线性状态观测器的新方法，它与传统状态观测器的设计方法不同。
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