Emkhakheni wesayensi, amashubhu okuhlola ayithuluzi elibalulekile lokwenza izivivinyo nocwaningo. Lezi zitsha ezingamacylindrical zisetshenziselwa ukubamba, ukuxuba nokushisisa amanani amancane amakhemikhali awuketshezi. Ziwumgogodla welabhorethri futhi ukubaluleka kwazo akunakugcizelelwa...
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