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    (dng)ǰλã߿W(xu)W(wng) > B(yng)ϱU >

    ݽӋ㷽,ݹYӋ

    £2023-09-20 16:00:44 ߿W(xu)W(wng)

    I(y)šB(yng)ϽǸ(j)šUM(fi)vUM(fi)(sh)ݕrȫʡڍšƽY{(dio)ȫʡȫڏ(zhn)λ͘I(y)ˆTƽYݕrg͂~L~ӋÁôµĺšݺB(yng)ϽӋB(yng)ϽӋ㷽ʲôСP(gun)֪R

    (һ)y(tng)IB(yng)ϽӋ㹫ʽ

    y(tng)IB(yng)Ͻ=(ȫʡڍšƽY+ָ(sh)ƽUM(fi)Y)2(ҕͬUM(fi)+HUM(fi))1%

    ʽбָ(sh)ƽUM(fi)YӋ㹫ʽ飺

    ָ(sh)ƽUM(fi)Y=ȫʡڍšƽYƽUM(fi)Yָ(sh)

    ()~B(yng)ϽӋ㹫ʽ飺

    ~B(yng)Ͻ=~􃦴~±g(yng)Ӌl(f)”(sh)

    ʽСg(yng)Ӌl(f)”(sh)飺

    g Ӌl(f)”(sh) g Ӌl(f)”(sh) g Ӌl(f)”(sh)

    40 233 50 195 60 139

    41 230 51 190 61 132

    42 226 52 185 62 125

    43 223 53 180 63 117

    44 220 54 75 64 109

    45 216 55 170 65 101

    46 212 56 164 66 93

    47 208 57 158 67 84

    48 204 58 152 68 75

    49 199 59 145 69 65

    70 56

    ()^B(yng)ϽӋ㹫ʽ飺

    ^B(yng)Ͻ=ȫʡڍšƽYƽUM(fi)Yָ(sh)(ҕͬUM(fi)+~ǰHUM(fi))1.4%

    ()y(tng)IB(yng)Ͻ^B(yng)ϽеıƽUM(fi)Yָ(sh)酢˱˚vUM(fi)Yָ(sh)ƽֵ˱ˮ(dng)UM(fi)Yָ(sh)鱾ˮ(dng)UM(fi)Y~һȫʡڍšƽYҕͬUM(fi)޵ąˆTҕͬUM(fi)ÿָ(sh)ҕͬ1.0

    ƽUM(fi)Yָ(sh)Ӌ㹫ʽ飺

    =(X1/C1+X2/C2+X3/C3++Xn/Cn)N

    ʽШ鱾ƽUM(fi)Yָ(sh);

    X1X2X3Xn酢ǰ12ꡢ3ꡭnꮔ(dng)걾UM(fi)Y~;

    C1C2C3Cn酢ǰ123ꡭnȫʡڍšƽY;

    N酢ӋUM(fi)(ҕͬUM(fi))ԡꡱλӋ_С(sh)cλ;

    ݮ(dng)겻Ӌָ(sh)UM(fi)”(sh)ӋUM(fi)

    ǰݲو(zh)ÿǰһpl(f)2%B(yng)ϽҎ(gu)

    P(gun)

    ˆD

    _(d)ݺB(yng)ϱU

    rg2023-12-04 01:0:39

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