Ana amfani da masu ɗaure don ɗaure sassa biyu ko fiye (ko abubuwan haɗin gwiwa) gabaɗaya. Ana amfani da su sosai a cikin injuna daban-daban, kayan aiki, motoci, jiragen ruwa, hanyoyin jirgin ƙasa, gadoji, gine-gine, sifofi, kayan aiki, kayan aiki, sunadarai, kayan aiki da kayayyaki. kayan aiki, kayan aiki, sinadarai, mita da kayayyaki,...
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