上游河段的床面为沙垄所覆盖，而下游河段则为平整床面。
In the upper reach the bed was dune covered and in the lower reach it was flat.
对受汞污染的蓟运河下游河段的抗汞细菌进行了系统的调查。
A systematical survey of mercury resistant bacteria in downstream of Jiy-un River polluted by mercury has been carried out.
大同水文站在扬子江下游河段采集到自2003年以来最高的水位。
The Datong Hydrological station in the lower reach of the Yangtze River, has recorded the highest water levels since 2003.
利用实测资料，对山区河流电站下游河段的设计低水位进行了分析计算。
By the use of the actual measuring data, the designed lowest navigable stage of power plant downstream in mountainous river was analyzed and computed.
论证了陆水河下游河段治理开发的必要性和可行性，提出了治理开发的基本构想。
The necessity and feasibility of rectifying and exploiting the lower reaches of the Lushui River is demonstrated and some ideas on rectification and exploitation are put forward.
70年代初，对其中、下游河段曾进行过渠化治理，但每逢洪水，坍塌毁损工程仍有发生。
The middle and lower reaches of the river have been channelized in the early 1970's, but the events of cave-in and damage still happen wherever there is a flood.
柳州市位于柳江中下游河段，是国家重点防洪城市，经过几年的建设，建立有工程防洪体系和非工程防洪体系。
Liuzhou city is located midstream and downstream of Liujiang River and the pilot city to the national flood control.
通过模型试验，研究了黄河下游夹河滩到高村断面河段漫滩洪水含沙量及颗粒级配的沿程变化规律。
With the model test, this paper researches overbank flood sediment concentration and its gradation change rules from Jahe beach to Gao village river section of lower Yellow River.
凌汛是黄河下游严重的自然灾害之一，黄河下游天桥河段属于典型的弯曲窄河段，极易发生凌情。
The ice flood is one of the serious natural disasters in the lower reaches of Yellow River.
三峡水库建成后，长江中下游河道将遭受长河段、长时期冲刷，河床河性会发生很大变化。
After completion of the Three Gorges Project, a long time erosion will occur in the middle and lower reaches of Yangtze river, and the characteristics of river channel will be changed obviously.
感潮河段因受上游径流和下游潮汐的双重影响，航道设计通航水位确定方法和标准需考虑两方面的因素，目前尚无定论。
Because of complex influence of runoff and tide in tidal reaches, how to make decision method and standard of designed navigable stage have not been known up to now.
而且，上中游河段受影响大于下游。
The influence in the upper reaches is larger than the lower stream.
分析了长江下游感潮河段大洪水和特大洪水高水位形成的水文因素，揭示了年最高水位今后一段时期内可能的变化趋势。
Hydrological factors of formation of large flood in the lower tidal reach of the Yangtze River are analyzed, and change trend of large flood is revealed.
通过湘江下游香炉洲、冯家洲河段流速、水位及分流比的计算分析，计算结果与实测资料吻合较好。
The computational examples of the Xiangluzhou and Caijiazhou sections showed the good agreement with the measuring data of the current velocity, water level and the diversion ratio.
闽江口台江-马江河段位于南台岛下游（见图1），有碍航浅滩多处。
Taijiang-Majiang reach of the Minjiang Estuary is situated downstream of the Nantai Island.
根据近年来东江下游及三角洲河道水文情势的变化，分析东江下游及三角洲河段供水水源保证工程建设的必要性。
According to variation of the hydrologic state, the paper mainly analyses the necessity of the source ensuring project of Dongjiang river and its delta waterway.
着重介绍了黄河下游大宫至王庵河段裁弯取直工程的方法和措施，可作为其他畸形河势治理时参考。
Engineering methods and measures to curve cut-off in the reach from Dagong to Wang 'an are mainly introduced in order to supply reference for abnormal river pattern training.
从针对松花江下游佳木斯至同江河段的河流特点及水文泥沙特征，制定了详细的整治原则和方案。
Based on the hydrologic and sediment feature of Jia Musi to Tong Jiang waterway of Song Hua River, the particular regulation and plan was draw up.
应用谱分析对长江下游和西江下游感潮河段水文序列进行了周期识别，获得了可信的隐含周期。
The cryptic period of the hydrologic time series of tidal reaches of the Yangtze River and Xijiang River are analyzed with the applying of spectral analysis and the result is reasonable.
界牌河段是长江中下游防洪的重要河段，亦是长江中下游著名的碍航河段。
The Jiepai reach in the middle and lower Yangtze River is not only an important one for its flood control. but it is also well known for its hindering navigation.
通澄河段是长江下游感潮河段，沿江抽、引水频繁，对潮区界和潮流界都有影响。
The Tong Cheng Reach is the lower part of the Yangtze River, where the water abstraction is active and gives impact both on the location of the tidal limit and on that of the tidal current limit.
本文以台北县双溪乡丁子兰坑溪亲水桥上下游约300公尺河段为栖地改善研究地点。
A river reach adjacent to the Cin-Shuei Bridge of Ding-Zi-Lan-Keng Creek in Shuang-Si Township, Taipei County was selected as a spot of study.
第二部分在理想河口研究的基础上，对长江下游感潮河段进行了水动力数值模拟。
Based on the study of ideal estuary, this article has studied the tidal limit and tidal current limit of Yangtze estuary by using the 2-d numerical model.
本文根据黄河主要干支流冲积河段实测高含沙洪水的输沙资料，从黄河下游河道比降、河宽、流速沿程调整、洪水非恒定性等方面分析研究了冲积河道输沙特性与河床冲淤特性。
The variations of slope and width, adjustments of flow velocity along the river course as well as the variability of flood in the Yellow River are analyzed based on the observation data.
本文根据黄河主要干支流冲积河段实测高含沙洪水的输沙资料，从黄河下游河道比降、河宽、流速沿程调整、洪水非恒定性等方面分析研究了冲积河道输沙特性与河床冲淤特性。
The variations of slope and width, adjustments of flow velocity along the river course as well as the variability of flood in the Yellow River are analyzed based on the observation data.
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