n.防波堤

v.給（海灘等）筑防波堤

=groin.

The contribution of groyne height reduction to counteracting unwanted erosion is then considered a favourable incidental circumstance. 丁壩降低對(duì)減少一些對(duì)主槽不利的侵蝕是一項(xiàng)比較可取的措施。

LI Hong.A study on hydraulic properties of groyne[D].Chengdu:State Key Laboratory of Hydraulics on High Speed Flows,Sichuan University,2003. [3]李洪.

[Hydraulics] a spur dike; a groyne 丁壩

Construction of in single-row groyne 單排樁式丁壩的優(yōu)點(diǎn)及施工

Construction of sheet pile for pile groyne in Qiantang River 錢(qián)塘江樁式丁壩板樁的施工工藝