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通过建立动力头式钻机沿架变角油缸的行程和支点位置的函数关系，并利用计算机进行循环运算，得出油缸行程和支点位置的计算结果的实例，笔者提出了对计算此类问题的看法。
By setting up the function relationship between the displacement and the fulcrum position of the power head drilling rig along the variable angle cylinder and using the computer to carry on the cyclic operation, the calculation result of the cylinder stroke and the fulcrum position is obtained. The author put forward the opinion on calculating such problems .