khoele
Tlhaloso e Khutšoanyane:
Karolo e tsoelang pele ea sebopeho sa spiral e nang le karolo e itseng e entsoeng holim'a matrix a cylindrical kapa conical.Likhoele li arotsoe ka likhoele tsa cylindrical le likhoele tsa conical ho latela sebopeho sa motsoali;E ka aroloa ka khoele e ka ntle le khoele ea ka hare ho ea ka boemo ba eona 'meleng oa motsoali,' me e ka aroloa ka khoele e kgutlotharo, khoele e khutlonnetsepa, khoele ea trapezoidal, khoele ea serrated le likhoele tse ling tse khethehileng tsa sebopeho ho latela sebopeho sa karolo ea eona (sebopeho sa leino).