短语词组短语littoral l drift 沿岸沉积物流沿岸漂移littoral barrier drift coast 有漂沙的沿岸地带littoral barrier drift 沿岸泥沙流littoral drift sand [水利]沿岸漂沙zone of littoral drift 海岸漂流带loss function of littoral drift 漂砂损失Drift littoral 海岸漂砂 返回 littoral drift