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Ko te W/R te whakapotonga mo te whakaahuru wai.Ko te W/P he whakapoto mo te parewai.I te nuinga o te wa ka taapirihia te whakamarumaru wai ki te maatete parewai ina hanga te papanga.I muri i te maroke o te papanga, ka hangaia he kiriata hydrophobic ki te mata o te papanga.Ma tenei ara, ka kore nga pata wai e...Pānuitia atu»
