I-fan pressure fan isebenzisa isimiso sokupholisa sokushintshwa komoya kanye ne-negative pressure exchange, umoya ukhishelwa ngaphandle okwenza umfutho womoya wasendlini wehle, umoya wasendlini uba mncane, wakhe indawo yengcindezi engalungile, bese kuba umoya wangaphandle, ngenxa ye-ai. ..
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