Parizvino, nzira yakajairika yekucheka pombi inoshandiswa nespiral steel pipe vagadziri ndeyekucheka kweplasma. Munguva yekucheka, huwandu hukuru hwesimbi mhute, ozone, uye nitrogen oxide hutsi huchagadzirwa, izvo zvinozosvibisa zvakanyanya nharaunda yakapoteredza. Kiyi yekugadzirisa dambudziko rehutsi...
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