Ukungasebenzi kahle okujwayelekile Amaphutha okusebenza, ukuvuza kwe-nitrogen, ukunakekelwa okungafanele nezinye izinto zizodala ukuthi i-valve yokusebenza yegebengu liguge, ukuqhuma kwepayipi, ukushisa ngokweqile kwendawo kawoyela osebenza ngaphansi komhlaba kanye nokunye ukwehluleka. Isizathu ukuthi i-technica...
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