当抽油机不平衡时，可以按文中的公式调整平衡块和曲柄平衡半径。
If the pumping unit is unbalanced, the counterweight and the crank balance arm can be adjusted according to the formulas presented in this article.
对动平衡条件、动不平衡角计算公式及两串联物体动平衡合成进行了详细的理论推导。
The condition of dynamic balance, the formula of dynamic non balance angle and the synthesis of dynamic balance peculiarity of two series bodies were presented.
推导出1318XA自然伽马能谱测井仪的泥浆修正公式，铀镭不平衡修正公式，提出矿层厚度划分方法。
The mud correction and uranium-radium non-equilibrium correction equation have been derived for 1318XA natural gamma-ray spectroscopy tool, and the division method of deposit thickness is proposed.
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