Incazelo emfushane:

Uchungechunge lokuphela kochungechunge lweswishi yokudlulisa okuzenzakalelayo yamandla amabili luyinhlanganisela yeswishi nokulawula okunengqondo, ngaphandle kwesidingo sesilawuli esengeziwe ukuze sizuze ngempela ukuhlanganiswa kwe-electromechanical, nemisebenzi efana nokutholwa kwamandla kagesi, imvamisa, isixhumi esibonakalayo sokuxhumana, ugesi, ukukhiya kokuxhuma, njll. kungabona okuzenzakalelayo, okukude kagesi, Ukulawulwa kwesandla kwezimo eziphuthumayo.