         ӦáʯӲ߼򡱼ɹ
         ----------
                   ѡվʽҪ
    :    P= 18.47 ()           ƽˮ:H=9.0()
    :    D= 4000 ()            :W= 27 (/)
    ƽ:T= 3.44 ()              ƽ:H1= 0.74 ()
    :   = 18.47 ()            ϵ:M=3
    ƽ:R=.78()
         ----------
    ȫӸ :H2=0.4()               ˮ:E= 0.08 ()
    (p=1-   ʯ):R=1.73()
         㳬:B=2.21()
    (p=5-  ʯ):R=1.43()
         㳬:B=1.91()
