上证综指也下跌了近3.5个百分点，使美元收回了前一天的部分损失，确保美元指数得到巩固，回到75点上方。

The Shanghai Composite is also down nearly 3.5%, allowing the USD to recoup some of its losses from the previous day, ensuring the DXY is now consolidating back above 75 levels.

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本文根据不同煤体强度条件下综放开采顶煤的位移曲线，采用盒维数的分形计算方法对其进行了维数分析。

Based on the displacement curves of top coal with different strength, the fractal dimension of which is analyzed and calculated according to the box dimension.

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