bed load movement 推移质运动
Neutron activation technique was first tried to make tracing measurement for bed-load movement.
并首次在国内试用了中子活化技术对底沙运动进行了示踪测定。
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.
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。
The formulas of velocity distribution, flow resistance and bed load transport rate are obtained, in which the flow and sediment movement are considered simultaneously.
本文还导得动平床情况下的流速分布公式、阻力公式和输沙率公式，使动床的水流运动和输沙过程得以联解。
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