Matsakaicin mita na ruwa an ƙididdige shi don Class 1 da 2. 1) Matsayin ruwa na Class 1 (wanda ya dace da Mitar ruwa Q3≥100m3 / h) a cikin kewayon zafin ruwa daga 0.1 ℃ zuwa 30 ℃, matsakaicin kuskuren izini na mita ruwa a cikin babban yanki (Q2≤Q≤Q4) shine ± 1%;Ƙananan yanki (Q1≤Q
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