The increase of the dry density results in the decrease of the ratio of horizontal and vertical swelling pressures.

当干密度较小时，竖向膨胀力与水平膨胀力基本相等；

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The increase of the dry density results in the decrease of the ratio of horizontal and vertical swelling pressures.

当干密度较小时，竖向膨胀力与水平膨胀力基本相等；

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