Vavu ndi chipangizo chowongolera kutuluka, kuthamanga, ndi komwe madzi amadziwira. Madzi oyendetsedwa amatha kukhala madzi, gasi, osakaniza amadzimadzi, kapena osakaniza amadzimadzi olimba. Vavu nthawi zambiri ndi thupi la valve, chivundikiro, mpando, zidutswa zotseguka ndi zotseka, makina oyendetsa galimoto, zisindikizo ndi zomangira, ndi zina zotero. The...
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