According to the results, the compressive strength of concrete was affected directly by different gradation of harsh aggregate.

结果显示，分档比例不同，会直接影响混凝土的抗压强度。

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In all, 1.1m tonnes of earth and rock were excavated in the construction of the 2010 course, flattening out the harsh gradients of the back nine, and using the aggregate to raise the opening holes above the level of the Usk's flood plain.

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