In this case, the edit is being performed on the special Wikipedia sandbox page, which is intended specifically for experimentation and testing and is automatically cleared at regular intervals.
在本例中，在特定Wikipedia sandbox页面上执行编辑操作，这主要用于实验和测试，会定期进行自动清理。
The testing purpose, model design principle, testing case, loading program, strain and arrangement of deformation test point of the special-shaped arch bridge test model are introduced in detail.
介绍了该桥模型试验的目的、模型设计原则、测试工况、加载方案以及应变和变形测点布置情况等，给出了几个主要荷载工况下模型试验的主要结果。
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