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The calculation results show that the influence of sand excavation on riverbed evolution,navigation,flood carrying capacity and wading engineering. 结果表明,采砂对河床演变、通航、河道行洪以及涉河工程的影响很小。
The assessment of riverbank stability was made combined with researches of riverbed evolution ,geology, geomorphology, and bank revetment projects ,supported by GIS. 应用地理信息系统技术，研究河床时空演变规律，结合沿江地质地貌、护岸工程等信息，对长江下游江岸稳定性进行评价。
The calculation results show that the influence of sand excavation on riverbed evolution, navigation, flood carrying capacity and wading engineering of the haling River is very small. 结果表明，采砂对河床演变、通航、河道行洪以及涉河工程的影响很小。
According to the principles of hydrology and riverbed evolution, some high-order response relationship exists between the advance characteristics of freshet and the river’s boundary conditions. 根据水文学和河床演变学的原理知，河道洪水演进特征与河床边界条件之间有着高阶的响应关系。
The sand dredging and its impacts on riverbed evolution and changes of the tidal dynamic in the Dongjiang River network and lower reaches of the Dongjiang River are analyzed in this paper. 通过分析东江下游及东江三角洲的采沙情况、采沙对河床演变和潮汐动力的影响。
Preliminary Study on Relationship Between Deepwater Channel Regulation and Riverbed Evolution 长江口深水航道治理与河床演变关系初探
The Riverbed Evolution of the Upper Reaches'Mainstream of the Fenhe River and Its Control 汾河上游干流河床演变及其治理
Analysis of Riverbed Evolution of YaoJianDa Channal in the Middle Reach of Changjiang River 长江中游窑监大河段河床演变分析
There are many pebbles on the riverbed. 河床上有很多卵石。
The effect of the riverbed evolution of fork channel in the Bagua Islet of the Yangtze River on the navigation channel and its countermea- sures 长江八卦洲汊道河床演变对航道的影响及对策
The space program is the evolution of years of research. 太空计划是多年研究的发展结果。
Darwin put forth the theory of evolution,. 达尔文提出了进化论。
Influence of Riverbed Evolution of the Lower Reach of the Three Gorge Project on the Channal Analyzed from Downstream Bed Erosion of Danjiangkou and Gezhouba Reservoir 从丹江口、葛洲坝水库下游河床冲刷看三峡工程下游河床演变对航道的影响
Keywords flow and sediment regime variation;riverbed evolution;river harness;longitudinal deformation;lateral deformation;roughness increment;scouring faultage; 水沙变异;河床演变;整治措施;纵向变形;横向变形;护底加糙;壅水效果;冲刷断层;
Do you know about the evolution of a seed into a plant? 你知道从种子发展成为植物的过程吗？
The crocodile was crawling along the riverbed. 这条鳄鱼正沿着河床爬行。
Our watchword is: Evolution, not revolution'. 我们的口号是: ｀要循序渐进，不要剧烈变革.;＇
The soldiers billowed across the muddy riverbed. 士兵们翻腾过泥泞的河床。
Darwin spend more than twenty year work on his theory of evolution. 达尔文花了二十余年时间研究他的进化论。
In politics Britain has preferred evolution to revolution. 在政治上，英国喜欢渐进而不喜欢革命。