A cikin yanayin watsa wutar lantarki, amfani da kayan aiki yana ko'ina, tare da kowane nau'in yana ba da fa'idodi na musamman don takamaiman aikace-aikace. Daga cikin waɗannan, kayan aikin bevel helical, musamman idan an haɗa su cikin masu ragewa, sun fito fili a matsayin kololuwar hazakar injiniya. A bevel g...
Kara karantawa