2) river regime evolution
河势演变
1.
Based on the analysis of the changes of the Songhua River Laozhou branch channel reach in plane section,transverse section and lengthways section within 30 years,we forecast the river regime evolution tendency and propose protective engineering measures for the oil field well area.
通过对松花江涝洲汊道河段近30年平面变化、断面变化和纵向变化进行分析,预测河势演变趋势,提出对井区进行防护的工程措施。
2.
Based on analysis of river regime evolution and channel characteristics in the reach, the issues and development trend of existing river control projects are analyzed and studied in the paper.
在对该河段河道特性及河势演变分析的基础上,对现状整治工程存在的问题和发展趋势进行了分析研究,比较选定了十八户控导工程布局方案,以达到控导主流、使原有工程发挥效益、减轻洪水威胁、稳定清水沟流路的目的。
3) evolution of river regime
河势演变
1.
In the natural channel, though the evolution of river regime has a certain randomness, there still due patterns can be followed.
在天然河道中 ,河势演变虽具有一定的随机性 ,但仍有一定的规律可循。
2.
Based on several typical sections of river bends,the effects from both the evolution of river regime and the bend-flow on river-crossing pipeline,such as the erosions from longitudinal and transverse flows,the uplift and pressure drag caused by the flow around pipe and the momentum and angular momentum caused by the induced velocity between transverse circle flows,etc.
基于几种典型河弯断面,对因河势演变和弯道水流而对裸露于弯道水流中的穿河管道产生的纵向和横向水流冲刷,纵向绕流产生的升力和压差阻力及横向环流间诱导速度产生的动量和动量矩等作用进行了研究。
4) river regime change
河势变迁
1.
This paper summarizes the present navigation situation of Chuan River and the research results related , and expounds the river regime change processes in the construction reaches and their influences on navigation conditions.
对有关科研成果和川江通航现状进行了综合分析，阐明了施工河段在三峡工程施工期间的河势变迁及其对相应通航水流条件的影响。
5) change trend
变化趋势
1.
Current situation of air environmental quality and change trend analysis in Sanmenxia city;
三门峡市环境空气质量现状及变化趋势分析
2.
The content and change trend of metal Hgin soils -vegetables in Guangzhou;
广州市蔬菜地土壤-蔬菜中重金属Hg的含量及变化趋势
3.
Precipitation characteristic and analysis on the change trend in Tonglu County of Zhejiang Province;
浙江省桐庐县降水特征及变化趋势分析
6) variation trend
变化趋势
1.
Analysis on the content and variation trend of heavy metal in themarine organisms in Daya Bay;
大亚湾海洋生物体重金属含量与变化趋势分析
2.
Study on the Mortality Rate and Variation Trend from 1991 to 2005 of Huantai Residents;
桓台县居民死亡流行水平和变化趋势研究
3.
Based on the data of chemical oxygen demand(COD)in Bohai Bay during 1995—2005t,he variation trend of the COD in different seasons(May,Aug and Oct)and years was analyzed.
基于1995年到2005年渤海湾化学耗氧量(COD)的监测数据序列,研究了渤海湾10年来COD的季节(5月、8月及10月)及年际间的变化趋势,运用极值理论研究了COD的极值分布规律,计算了COD分别超过不同污染水平的风险概率。
补充资料：河势
【诗文】：
河势浩难测，禹功传所闻。
今观一川破，复以二渠分。
国论终将塞，民嗟亦已勤。
无灾等难必，从众在吾君。
【注释】：
【出处】：
河势浩难测，禹功传所闻。
今观一川破，复以二渠分。
国论终将塞，民嗟亦已勤。
无灾等难必，从众在吾君。
【注释】：
【出处】：
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