Unikezelo lwamanzi kumgqomo wesikhumba yinxalenye ebaluleke kakhulu kwishishini lokwenziwa kwesikhumba.Unikezelo lwamanzi egubu lubandakanya imilinganiselo yobugcisa efana nobushushu kunye nokongezwa kwamanzi.Okwangoku, uninzi lwabanini bamashishini abasuki basekhaya basebenzisa ukongeza amanzi ngesandla, kunye ne-ski...
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