1.Q=KAv根号（2Δp/ρ）=0.6*（π*0.025² /4）*根号（2*0.2×10³×9.807/9807）=0.0001863m³/s
瞬时流量:Q=μ(πd²/4)√(2gh)=0.6×(π×0.025²/4)√(2×9.8×0.2)=5.83×10^(-4)m³/s
