介绍了激光干涉法长度测量的基本原理，提出在不更换和调整系统中光学器件的条件下，实现线位移和角位移—机测量集成装置的设计思想。
The paper introduces the basic principle of measuring displacement with laser interferometer, and gives a designing idea that realizes length measurement and angle measurement on one apparatus.
本文根据逆过程法的基本原理，导出了以边界元法为基础的粘弹性位移反分析公式，并将其与以有限元法为基础的基本公式作了比较。
The back analysis formulas of viscoelastic displacements are derived from BEM according to the fundamental principle of inverse process, and it is compared with FEM ba formulas.
本文根据逆过程法的基本原理，导出了以边界元法为基础的粘弹性位移反分析公式，并将其与以有限元法为基础的基本公式作了比较。
The back analysis formulas of viscoelastic displacements are derived from BEM according to the fundamental principle of inverse process, and it is compared with FEM ba formulas.
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