Chiyerekezo cha kuyenda wamba Q3 mpaka kutsika kochepa Q1.Makhalidwe otaya a akupanga madzi mita amatsimikiziridwa ndi Q1, Q2, Q3 ndi Q4, malinga ndi wamba otaya mlingo Q3 (m3 / h ndi unit) ndi chiŵerengero cha Q3 kwa otaya osachepera Q1.Q3 imachokera ku 1, 1.6, 2.5, 4, 6.3, 10, 16, 25, 40, 63, 100, ...
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