实测地应力结果表明，应力的大小和方位变化较为复杂。
In situ stress measurement result indicates that both magnitude and orientation of stress vary greatly.
棱镜成像是静态问题，转动棱镜的成像方位变化属动态问题。
The image formation for a reflecting prism is a static problem, but the image orientation change caused by a rotation of a prism belongs to a dynamic problem.
通过教学实验和数据分析，了解到一些带有规律性的头部变化，揭示了头部方位变化的具体特征。
This article reveals the specific features of some regular head position shifts based on some teaching experiments and data.
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