To the same river section the absolute elevation and the equalized integrated curve of the cros section characteristics of the river are the same.
对于同一河道，由于高程与河道断面特性平均积分曲线不变。
To the same river section the absolute elevation and the equalized integrated curve of the cros section characteristics of the river are the same.
对于同一河道，由于高程与河道断面特性平均积分曲线不变。
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