1916.66+38.33+42.07
    0.021518*1954.99
    0.021518*0.01
    1916.66+38.33
    1916.66×0.02
    72.8+72.8*cos(135)
    72.8+72.8*cos(128.79)
    72.8+72.8*cos(125.43)
    72.8+72.8*cos(75)
    72.8+72.8*cos(30)
    72.8+72.8*cos(128.29)
    72.8+72.8*cos(124.7)
    72.8+72.8*cos(120.1)
    72.8+72.8*cos(91)
    72.8+72.8*cos(73.5)
    72.8+72.8*cos(105)
    72.8+72.8*cos(120)
    (42.3%^2×0.60%^2+57.7%^2×0.55%^2+2×57.7%×42.3%×0.60%×0.55%×0.80）^0.5
    72.8*cos(105)
    72.8*cos(120)

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