Official Answer
Answer
Rashin gajiya yana faruwa ne lokacin da motsin oscillatory na mintuna tsakanin magudanar ruwa da samansa ('maganin tuntuɓar'). Wannan motsi, wanda sau da yawa yakan haifar da rawar jiki, yana rushe shingen oxide mai kariya na karfe, yana haifar da ƙananan ramuka. Waɗannan ramukan suna aiki azaman tashin hankali ($ K_t$), inda gajiya ke farawa. A yayin binciken gazawar, ana gano tashin hankali ta kasancewar tarkace ja ko baki mai kyau (dangane da kayan) da kuma bayyanar 'pitted' a magudanar ruwan. Ƙara abin da aka riga aka ɗauka ko amfani da mai mai ƙarfi na fim zai iya rage wannan ta hana motsin dangi.
