0.6×12.1×1.2
    0.6×12.1×1.2
    0.6×12.1×1.2
    0.1×12.1×〖1.2〗^2
    1.1×[1.3×(1.32×26+0.135+0.45）+1.5×（2.5+2+2)]×0.2
    1.1×(1.32×26+0.135+0.45+2.5+2+2)×0.2
    (0.677×45.1×〖0.2〗^4)/(100×6000×2.813×10^(-7) )
    1.5×7.2/0.015×10^(-3)
    0.24/(3.751×10^(-2) )
    0.6×60×0.2
    0.1×60×〖0.2〗^2
    (0.677×45.1×〖0.3〗^4)/(100×6000×2.813×10^(-7) )
    1.5×10.8/0.015×10^(-3)
    0.54/(3.751×10^(-2) )
    0.6×60×0.3
    0.1×60×〖0.3〗^2
    1.1×[1.3×(1.32×26+0.135）+1.5×（2.5+2+2)]×1
    1.32×26+0.135+2.5+2+2
    2.21×0.98×0.5
    0.22×(1-〖0.94〗^5)/(1-0.94)

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