Copper isat
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Mizere yamkuwa ndi mipiringidzo yopangidwa ndi yamkuwa yomwe yaponyedwa ndi mtundu wina, monga rectangular, ozungulira, ndi okonda mpweya (ahc) - yopangidwa ndi kaboni ndipo carbonaceous gases. Njira yoyeretsera yamkuwa imachotsa mpweya wabwino kwambiri womwe uli mkati, zomwe zimapangitsa kuti 99.95-99.99% ya oxygen.