Pali njira zambiri zochepetsera machubu a zitsulo za kaboni, monga kudula gasi wa oxyacetylene, kudula kwa plasma ya mpweya, kudula kwa laser, kudula waya, etc., kumatha kudula chitsulo cha carbon. Pali njira zinayi zodziwika bwino zodulira: (1) Njira yodulira moto: Njira yodulira iyi ili ndi mtengo wotsika kwambiri, koma imadya madzi ambiri...
Werengani zambiri