While serve for beaching of bank, permeable spur dike could elaborate meantime merit sever of discontinuity revetment slacken littoral current velocity, brought accumulation of sediment, touch the object to preserve bank.
当用作护岸工程时,丁坝可以发挥其间断性护岸的优点,减缓近岸流速,促使泥沙淤积,达到保护堤岸的目的。
There exist the different geomorphic types including the branching bay, submarine shoal, subfluvial bank, subaquatic delta, tidal current delta, tidal sand ridge, sand wave and caldron in the littoral zone.
滨海地貌主要有河口港湾、水下浅滩、水下岸坡、水下三角洲、潮流三角洲海底沙波、潮流沙脊、海釜等;
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