查询词典 river channel

Rapids are created when rivers are on a steep gradient, making the water flow very fast, when the flow is constricted into a narrower channel, or where an obstruction such as a boulder interrupts the river, causing eddies and swirling currents.

当河流的坡度陡斜造成水流变快的时候，当水流被挤入更为狭窄的河道的时候，或是在河流被巨石之类的障碍物阻隔从而引起旋涡和涡流的地方，就会形成急流。

Through 40 years' operation, the resources of Zhanghe River is gradually reduced, and Majiayan Reservoir is the supplementary works for the Red-flag Channel.

红旗渠是林州市引漳入林灌溉的一项重要水利工程，经过四十年的运行，漳河水源逐渐减少，马家岩水库是红旗渠的补源工程。

Constrictions can form a rapid when a river's flow is forced into a narrower channel.

束带，可形成一河快速的流通渠道，是被逼窄。

The river Severn, Britain's longest, which flows from Wales to the Bristol Channel, has a tidal range of 15 metres, the second highest in the world.

塞文河是大不列颠最长的河流，源出威尔斯，注入大西洋布里斯托海峡，潮差达15米，是世界上潮差第二大的河流。

Cardiff city is located on the Bristol Channel at the mouth of the River Taft, and Cardiff district is largely coextensive with the city.

加的夫城位于塔夫河口的布里斯托尔海峡，其行政区很大程度上与加的夫城一起向外扩张。

The previous researches have been done experiments mostly in the Water tank. In order to simulate turbulence of flow in river and research its characteristics, the characteristics of turbulence are studied by experiments in the water channel with ADV technique. The research results indicate that R.M.S. velocity linearly relates to the oscillating-grid frequency; R.M.S. velocity decays by power exponent relates to the distance from the grid midplane; and the relationship between the geometrical factors and the free movement space of water is direct proportion.

以往研究大都在水箱中对振动格栅紊流特性进行实验研究，为能模拟天然河道中的紊流，研究天然河道中紊流特性，利用ADV技术在水槽中对振动格栅紊流进行了实验研究研究结果表明：均方根速度与格栅振动频率成线性关系；均方根速度与距格栅中平面的距离成幂指数关系衰减；几何系数与水的自由运动空间成正比关系。

The North Channel of the Yangtze River Estuary is chosen as study object.

选择长江口北港河道上段作为研究区，利用上述模型，分两种情况进行水深反演：一是以河道全部历史样本建模；二是将河道按自然水深划分为浅水区和深水区分别建模。

In this paper, north branch main channel beam-and-slab decks cable-stayed bridge of Jingzhou Yangtze River Bridge is selected as an example.

该方法能实现调索前后结构分析计算模型的统一，且能方便地考虑调索过程中各种非线性因素的影响。

Metropolitan France extends from the Mediterranean Sea to the English Channel and North Sea, and from the Rhine River to the Atlantic Ocean.

法国本土延伸，从地中海到英吉利海峡和北海，从莱茵河到大西洋。

Driving through the thickly wooded Ardennes, success hinged upon whether the three panzer corps (combined in Panzer Group Kleist) of the army group – XV, XLI and XIX Panzer Corps – could cross the River Meuse and then advance to the English Channel.

推进入树木繁茂的阿登地区，成功的关键在于是否集团军群(第十五、第四十一、第十九装甲军团)的三个装甲军团能够渡过默兹河并前进至英吉利海峡。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。