文中主要叙述了中子活化分析天然泥沙法的原理及在杭州湾北岸研究底沙运动的应用情况。这次试验区域是杭州湾北岸，共取现场泥样27个。
Authors describe the principles and application on investigation of bed-load movement along North Bank of Hangzhou Bay. 27 bed-load samples were callected in the test region.
在交通方面，杭州湾跨海大桥及其北岸连接线飞跨新区，紧邻的国家五级航道六平申线，直通上海黄浦江。
Hangzhou Bay Bridge goes over the new zone. Close to the zone is a state fifth-grade waterway which links with the Huangpu River of Shanghai.
在交通方面，杭州湾跨海大桥及其北岸连接线飞跨新区，紧邻的国家五级航道六平申线，直通上海黄浦江。
Hangzhou Bay Bridge goes over the new zone. Close to the zone is a state fifth-grade waterway which links with the Huangpu River of Shanghai.
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