常见例句双语例句And the lower strata of tidal flat, a zone of seaward accretion, is characterized by the slope, silt or sandy silt sediments and scour-fill structures respectively.横向沉积带为潮滩堆积体的基础，以滩坡、粉砂及细砂质粉砂沉积、冲刷-充填构造为特征。 返回 accretion zone