percolating filter वाक्य

उदाहरण वाक्य

1. These systems have also been described as roughing filters, intermittent filters, packed media bed filters, alternative septic systems, percolating filters, attached growth processes, and fixed film processes.
2. At Birmingham he was responsible for the construction of the first large-scale percolating filter plant, a complete departure from the traditional land treatment in use in the city and elsewhere.