竖曲线高程计算主程序(5800)Lbl A:K:Prog:竖曲线元素库子程序:A-T→E:AT→F ←If K=A:Then Goto 5:IfEnd ←If K≤E:Then Goto 3:IfEnd ←If K≥F:Then Goto 4:IfEnd ←If K<A:Then Goto 1:IfEnd ←If K>A:Then Goto 2:IfEnd ←Lbl 1:K-E→X:X2÷(