A.0.3~0.5m3∕dB.0.5~0.6m3∕dC.0.03~0.05m3∕dD.0.05~0.06m3∕d
A.45%~55%B.55%~65%C.65%~75%D.75%~85%
A.40%B.50%C.60%D.70%