Kariyar wuyan hannu, gadin gwiwa da bel sune na'urorin kariya guda uku da aka saba amfani dasu a cikin dacewa, waɗanda galibi suna aiki akan haɗin gwiwa. Saboda sassaucin gabobi, tsarinsa ya fi rikitarwa, haka nan kuma hadadden tsarin yana tantance raunin gabobi, don haka kare wuyan hannu,...
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