Lalacewar da ke iya faruwa a cikin yankin waldawar baka mai nutsewa sun haɗa da pores, tsagewar zafi, da yankewa. 1. Kumfa. Kumfa galibi suna faruwa a tsakiyar walda. Babban dalilin shi ne har yanzu hydrogen yana boye a cikin karfen da aka yi masa walda a sigar kumfa. Don haka, matakan kawar da ...
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