Uhambo lweFektri

Iimveliso eziphambili ze-geism yokuhlola ienyikima ineesithandathu uthotho, ngaphezulu kwe-60 iindidi. Iimveliso zisetyenziswa ngokubanzi kwi-petroleum, izimbiwa kunye nokuhlolwa komhlaba, indlela, ibhulorho, idama kunye nokwakhiwa kwetonela, ukungcangcazela okunzima koomatshini, ukubeka iliso kwinyikima, njl.

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