TY JOUR TI UPDATE OF HYDRAULIC CALCULATION DURING SYSTEM CONSTRUCTION DRIP IRRIGATION KW drip irrigation KW hydraulic calculation KW water flow KW pipeline throughput KW pressure and pressure losses in the system KW hydraulic losses KW pipeline pressure KW transit and travel flow JO Science & World AU Grushin, A.V. AU Kolomeets, A.V. PY 2025 IS 0 PB LLC "Perspektiva"