1) exchange between coarse and fine sediments
粗细泥沙交换
3) sediment exchange
泥沙交换
1.
On the basis of mechanism of sediment exchange,some improvements in relation to the calculation method for riverbed deformation are performed,including modification of dispersion equation of suspended load under the condition of erosion;definition of carrying capacity of non uniform sediment;definition of efficient transport rate of bed load as well as that of time step and space step.
根据泥沙交换原理 ,对河床变形计算方法进行了若干改进。
4) sediment lateral exchange
泥沙横向交换
1.
The productive embankments on the watercourse bottomland disturb the water-sediment lateral exchange between bottomland and main flume,which have great influence on the riverbed evolution.
河道主槽两侧修建的生产堤影响滩槽泥沙横向交换,对河床演变带来很大影响。
5) sediment exchange between flat and pool
滩槽泥沙交换
6) coarse sand
粗泥沙
1.
The outcomes show that the deposit on vertical section distributes coarse alternating with fine and with a certain lamination;on horizontal,the coarse sand of deposit in front of dam is remarkably reduced;the thickness of clay layer in front of a warping dam without dewateri.
结果表明:垂直剖面上淤积物粗细相间分布,具有一定层理;在水平方向上,坝前淤积物中粗泥沙明显减少;无放水工程的淤地坝坝前黏土层厚度较大,有放水工程时控制面积大的淤地坝淤积物较细;上下游淤地坝表现为上游拦粗下游淤细。
2.
It approaches to the definition of "coarse sand "of the Yellow River from the two angles of sediment movement characteristic description and heterogeneous particle and turbulent follow-up respectively by using the principle of river dynamics.
运用河流动力学原理,从描述泥沙运动特性和异质粒子与紊流跟随性2个角度,分别对黄河"粗泥沙"的理论界定进行了探讨。
3.
In order to draw a circle around coarse sand concentrated coming area in sediment-laden and coarse sand area of the middle Yellow River,the paper makes macro analysis on the factors of geological structure,lithology of stratum,category of landforms and hydrometeorology of the sediment-laden and coarse sand area in the middle Yellow River and regional difference related with coarse sand production.
为在黄河中游多沙粗沙区确定粗泥沙集中来源区,从黄河中游多沙粗沙区地质构造、地层岩性、地貌类型、水文气象等因素与产粗泥沙关系的区域差异对粗泥沙集中来源区进行了宏观判析,认为在黄河中游多沙粗沙区范围内,吴旗—志丹—延安—延长一线以北、东胜—准格尔—清水河一线以南、吴旗—榆林—神木—大柳塔一线以东(风沙区以东)至晋西北黄河沿岸的范围是侵蚀最为严重的地区,也是粗泥沙集中来源区的宏观待选范围。
补充资料：单官能交换基离子交换树脂
分子式：
CAS号：
性质：是指在离子交换树脂交联结构或非交联结构本体上仅含有单一种类交换基团的各种离子交换树脂的总称。如通常使用的磺酸型阳树脂、羧酸型阳树脂、季铵型阴树脂等。
CAS号：
性质：是指在离子交换树脂交联结构或非交联结构本体上仅含有单一种类交换基团的各种离子交换树脂的总称。如通常使用的磺酸型阳树脂、羧酸型阳树脂、季铵型阴树脂等。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条