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Umshini Wokujikijela Ipayipi Lokulinganisa I-NPD Series Slurry Balance
Umshini wokujikijela amapayipi ochungechunge lwe-NPD ulungele kakhulu izimo zejiyoloji ezinengcindezi ephezulu yamanzi angaphansi komhlaba kanye ne-coefficient ephezulu yokungenela inhlabathi. I-slag evubukuliwe ikhishwa emhubheni ngesimo sodaka ngepompo yodaka, ngakho-ke inezici zokusebenza kahle kakhulu kanye nendawo yokusebenza ehlanzekile.