The PDFM 4.0 works on any liquid containing bubbles or solids and is recommended for "difficult liquids" like wastewater, slurries, sludge, chemicals, viscous liquids and abrasives.
该PDFM 4.0工程含有气泡任何液体或固体，并为“困难液体”像废水的建议，泥浆，污泥，化学品，粘性液体和磨料。
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