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进行有限应变测量是构造地质学的一项重要任务，而如何通过平面二维应变计算三维应变椭球就成为有限应变测量中的一个重要问题．现行的由任意三个互不平行的平面上进行计算三维应变椭球需要首先要进行相容性和误差调整，造成了计算过程的复杂性。本文在前人工作的基础上，利用数学方法，将相容性调整和应变椭球系数的计算合二为一，从而简化三维应变的计算。
Finite strain measurement is an important task in structural geology. How to calculate three-dimensional strain ellipsoid by plane two-dimensional strain becomes an important problem in finite strain measurement. The current calculation of three-dimensional strain ellipsoid from any three non-parallel planes requires compatibility and error adjustment first, which complicates the calculation process. Based on the work of predecessors, this paper uses the mathematical method to simplify the calculation of three-dimensional strain by combining the adjustment of compatibility and the calculation of strain ellipsoid coefficients.