Tsarin ƙarfe yana tabbatar da daidaiton tsari, mannewa da dorewa.
Nauyin da aka ƙara. Yawancin injuna suna da ƙaho biyu masu nauyi, amma wasu suna da ƙari. Kowane ƙaho yana ɗauke da faranti na Olympics na inci 2 na yau da kullun 5-7.
Yana kwafi motsin injina na halitta.
Gajeren watsa juriya kai tsaye.
Kujeru masu daidaitawa
Firam ɗin ƙarfe da aka haɗa daidai
Tsarin ƙarfe yana tabbatar da daidaiton tsari, mannewa da dorewa.
Aiki mai santsi da kuma dorewa mai kyau.
Riƙon hannu wani abu ne da aka yi da robar thermos wanda ba ya sha, kuma yana jure lalacewa da tsagewa.