rapid gravity filter वाक्य

उदाहरण वाक्य

1. These work on the same principle as rapid gravity filters, differing in that the filter medium is enclosed in a steel vessel and the water is forced through it under pressure.
2. The "'rapid sand filter "'or "'rapid gravity filter "'is a type of filter used in water purification and is commonly used in municipal drinking water facilities as part of a multiple-stage treatment system.