The proposed architecture adopt recursive pyramid algorithm(RPA)instead of the classical pyramid algorithm(PA), only one low-pass filter and high-pass filter are required to compute all levels.
该结构采用了递归金字塔算法（RPA）取代传统的PA算法。只用一组滤波器即可完成所有级别的小波运算。
PA pipes with ninute holes ate used as filter medium in the filter system. The system is of simple construction and will require minimal supervision.
本项研究的过滤系统采用PA微孔管作为过滤介质，结构简单，管理要求不高。
PA pipes with ninute holes ate used as filter medium in the filter system. The system is of simple construction and will require minimal supervision.
本项研究的过滤系统采用PA微孔管作为过滤介质，结构简单，管理要求不高。
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