-
Multi-stage Kufewetsa Madzi Zida Zochizira
Mipikisano siteji kufewetsa zipangizo madzi mankhwala ndi mtundu wa mkulu-mwachangu mankhwala zipangizo madzi, amene amagwiritsa ntchito masitepe angapo kusefera, kuwombola ion ndi njira zina kuchepetsa kuuma ions (makamaka calcium ayoni ndi magnesium ayoni) m'madzi, kuti akwaniritse cholinga cha kufewetsa madzi.