umthi wokuthuthela olungaphakathi
Umbhulalo wokusebenza wesuwe lisekupheleni kwezilondolozi ezimoderni zokusebenzela izinkathelo, uchazelela umthengeli ngesikhathi sokusetyenziswa ngokubonakali kunye nokuthile kumaterelya ofakileyo. Lomphahla ospecializeyo usebenziswa ngamagwinya amabhedekileyo, ashiywa ngokuthi yabelana nemacotoni, ipolyethilethi noma umhlaba wabo, ukuhlula ukusetshenziswa somkhondo omncane okanyeleyo olungaphambili lokusebenzela kuzikhwalelano ezidingekayo. Umbhulalo uzihlobene nezinto ezizenzakalelayo zokusetyenziswa ukuba zibheke kuhluke kwejikelele, uproteksheni lwesintsiya, kunye nokuphumelela ukusuka kwemanzini. Umbhulalo wesuwe wokuqinisekisa wahlala phambili ngokushesha lokuncedisi lokunye nokuhlola kwezinye izinto ezindaweni eziphambili. Uphakathi lokusebenza luchasela ukukhetha kwezifomu zomphahla kunye nokusebenzela izingxenye ezincinci zokugcina ukusetshenziswa umkhondo omncane obungaphezu kwalokhu olungaphambili lokuhlola ukusuka kwezinye izinto kunye nokuhlola iziphalazwi. Ukuphakama kwezinto zombili zingenhloko, ziyakwenza ukusetshenziswa kwezinye iindlela ezininzi, kusukela ngokuthile kwezinto zokusebenza kanye nokuproteksha kwezinto eziningi kunye nokusetshenziswa kwezindlela ezithile. Ukuthile kwezinto zingenhloko nokuhlola ukudibanisa kwezinto zingenhloko lokuhlola ukusetshenziswa kumalungelo apho umthengeli wezimpahla zikhona.