sand dredge meaning in Chinese

挖砂船
挖沙船

The sand dredged from the waters will also be used to provide a two - meter capping layer over the granite platform
从水里挖出来的沙子也被使用区提供一个两米的盖在花岗岩平台上。
According to the contrast between different maps and the dynamical conditions , the area of bohe lagoon had reduced by 45 . 3 % from 1932 to 2000 and human activities in the coastal zone , such as inning , sand dredging and aquiculture , have brought great effects on the coastal system , which has accelerated the barrier erosion and lagoon evolvement
通过对比分析， 1932 ~ 2000年，博贺?湖面积减少45 . 3 % ，人类活动已成为影响该区海岸演变的主导因素；滩涂围垦、海岸采沙与水产养殖等人类活动加剧了沙坝海岸的侵蚀后退，且使得?湖面积迅速减少，不断淤浅萎缩，大大加快了海岸体系的演化进程。