From the point of methodology: using different methods in parallel connection and series connection.
从方法学角度：强调不同方法的串联和组合。
The paper described a multi-pole waveform absorbing filter used in the grid for series or parallel connection, to control the grid pollution to a certain extent and save the power consumption.
设计一种用于网电源上，既能串联使用，又能并联使用的对电网污染具有一定治理作用，又可起到节电效果的多极点电源波形矫正滤波器。
In series connection and parallel connection can compound use.
串联和并联连接两种方式可混合使用。
应用推荐