(0.1114*ln(138.5/11))/(2*3.1415926*0.00064*28)
    (0.1114*ln(138.5/10))/(2*3.1415926*0.00064*28)
    (0.1114*ln(138.5/9))/(2*3.1415926*0.00064*28)
    (0.1114*ln(138.5/8))/(2*3.1415926*0.00064*28)
    (0.1114*ln(138.5/7))/(2*3.1415926*0.00064*28)
    (0.1114*ln(138.5/6))/(2*3.1415926*0.00064*28)
    (0.1114*ln(138.5/5))/(2*3.1415926*0.00064*28)
    (0.1114*ln(138.5/4))/(2*3.1415926*0.00064*28)
    (0.1114*ln(138.5/3))/(2*3.1415926*0.00064*28)
    (0.1114*ln(138.5/2))/(2*3.1415926*0.00064*28)
    (0.1114*ln(138.5/1))/(2*3.1415926*0.00064*28)
    lne
    arcsin3
    tan 90
    arcsin（1/2）
    sin15
    7.5/1000*24*6/7
    1/1.025
    240÷8
    240÷6

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