查询词典 sediment sampler

Therefore,it is meaningful to research the Numerical method of diffusion equation for suspended sediment.

在天然河道中，悬移质泥沙运动与河床的冲刷和淤积、取水排水等实际生产问题有密切联系。

The reserves of alluvium and diluvium groundwater has better deposited condition, and the supplement of water resource is abundant; but most of flows-in lake basin area is lacustrine facies sediment, and/or the weather, water resource exist mainly as solid form, and the groundwater resource is indigence.

南部河谷冲洪积层储水条件较为优越、且补给水源充分，其地下水和地表水构成了一个统一的水资源系统和完整的水生态体系；而北部内流湖盆地区多为湖相沉积、且受气象因素制约，水资源多以固体形式存在，因而地下水资源总体贫乏。

But swabbing the sediment will discolour the water for a short period.

但抽汲沉积物会造成短期内水变色。

Next the sediment is removed by disgorgement .

明年沉积物是除去交出。

We found that the hyperpycnal flow was an important pattern for the dispersal of sediment.

多年的研究发现，泥沙异重流是黄河三角洲泥沙扩散的一种重要的模式。

The concentration factors for the marine organisms and distribution coefficient between sediment and seawater have been calculated.

计算了海洋生物对137Cs的浓集因子与137Cs在沉积物和海水之间的分配系数。

It arrives at some conclusions as follows:(1) in the past 40 years, soil erosion in the drainage basin has experienced a process of getting more intense and then becoming slighter which accords with the results received by using sediment-analysis method.

研究得到的主要结论如下：(1)过去四十多年来，流域的土壤侵蚀经历了一个先增强再减弱的过程，这个趋势与在该流域利用沉积物分析法得到的结果相吻合。

From long-term point of view, sediment delivery ratio of a drainage basin with a control degree reaching 70% can be reduced by around 50% in contrast to pre-control conditions.

摘 要：从长期来看，在治理度达到70%条件下与治理前相比泥沙输移比减小50%左右，治理的效益是十分显著的。

It has shown that the drift velocity is relatively more intense near the wall which greatly affects the turbulent suspension and transportation diffusion of the sediment.

通过数值模拟和理论分析说明了相间漂移速度在靠近床面的区域内相对较为显著，这对于泥沙的湍流悬浮和输移扩散有较大的影响。

In the end we confirms its main functions, which is discharging the folium water on the tidal flat of the Tidal-Basin in the end of the ebb-tide, transporting sediment to Tidal-Basin through tidal creek systems, confining the swing range of the dynamical axis of flood tide or ebb tide, balancing the dynamical status of the South and North.

通过对比分析1973年—2000年的卫片，总结了条子泥沙洲主要潮盆-潮沟系统的近期动态变化特征；并对潮沟系统的历年变化状况进行了对比分析，亦发现了潮沟系统的主要运动特点。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。