The design theory, function, application and secondary use is mentioned simply, specially, its application in the design of channel cross section is mentioned.

本文简述了数字化断面的设计原理、功能、应用及二次使用，特别是其在水利上河道断面设计中的应用。

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This paper presents the design of a new degree of freedom-channel with variable cross-section design.

本文提出了一种新的设计自由度——变截面通道设计方法。

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Compared with other types of open channel cross-section, the cubic parabola shape open channel is one of the open channels which convey water more efficiently.

与其他形式断面渠道的比较结果表明，立方抛物线形断面渠道也是一种水力较优的输水渠道。

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