Through the analysis of order tracking, this paper find a new method that realize orientation data sample in rotor test.

本文通过对阶次跟踪的分析，找到了一种实现旋翼同方位数据采集的新方法。

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This paper use experimental data to set up linear regression equation with unitary and regression straight line, to use variance analysis and related coefficient to test validity of equation.

本文利用实验数据建立一元线性回归方程；回归直线，并用方差分析法和相关系数法检验方程的有效性。

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This paper presents the analysis of stress, characteristic of skew arch bridges by comparing with the data derived from theory computation, model test and practical bridge test.

本文通过理论计算、模型试验和实桥试验数据的对比，对圆弧形斜拱桥受力特性进行了分析研究。

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