正弦波形赋予了通过水道的结构轮廓的形状。
A sinusoidal waveform provides the structural silhouette shape across the channel.
马蹄形过水断面是无压输水隧洞中常采用的断面形式之一，因其几何形状复杂，水力计算困难。
It is difficult to calculate normal water depth of horseshoe cross section, because its complex geometrical shape.
由于她的形状，一船将继续向前迈进，通过水的活动更容易后退。
Because of her shape, a ship will move ahead through the water more easily than going astern.
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