For a given channel geometry slope and roughness and a specified value of discharge a unique value of depth occurs in steady uniform flow.

对于给定的河道几何形状、坡度、粗糙度以及规定排水量，均匀稳流中出现唯一深度值。

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Rutting is one of the major deterioration forms of high level asphalt pavement for channel traffic and the significant factor to affect the roughness, performance, driving safety and comfort.

车辙是渠化交通高等级公路沥青路面的主要损坏形式之一，是影响路面平整度、路面使用性能、行车安全性和舒适性的重要因素。

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