Mfundo yogwirira ntchito ndi njira yoyendetsera ma valve otomatiki
Valavu yodziwikiratu ndi mtundu wa valavu yomwe imatha kusintha kayendedwe kake, kuthamanga, kutentha ndi magawo ena malinga ndi kusintha kwa magawo a dongosolo, omwe amagwiritsidwa ntchito kwambiri mumafuta, mafakitale amankhwala, zitsulo, zomangamanga ndi mafakitale ena ...
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