The two-phase optimization theory was adopted for designing the sewage pipe, and the ground slope consensus method was used for optimization calculation of rain water pipe.

对污水管道采用两相优化理论设计，对雨水管道采用与地面坡度一致法进行优化计算。

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"When you get to the top of the wall there is a straight drop, a small flat bit and a slope bringing the ground back to the same level, " he said.

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At the summit of Corcogemore, I could see the land around me roll and slope downward, as if the ground had slid down suddenly and the rocks holding it together made one final grab at staying put.

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And the pace and slope will depend on conditions on the ground, but it will begin.

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