洪水位

The paper studies the rational back aggraclation width of yellow river dike with reliable theory,researches and formulates the finite element reliability program of Monte-carlo filtration for calculate the failure probability of filtration stability for soil body of different distance from slope base of yellow river dike under design flood level,thus determines the rational back aggradation width.

利用可靠性理论对黄河堤防淤背设计的合理宽度问题进行了系统的分析研究，充分考虑了黄河堤防土体参数的随机变异性，研制了蒙特卡洛渗流有限元可靠度程序，用来计算在设计洪水位下距黄河堤防背河坡脚不同距离的地层土体渗流稳定破坏概率，从而确定合理的淤背宽度。

Based on the flood level frequency curve, hydrological failure risk was divided into flood overflowing risk and flood overtopping risk.

基于推求的洪水位频率曲线，将堤防水文失事风险分为洪水漫溢风险和洪水漫顶风险。

Three rebuilt programs which are ogee weir, maze weir and board-crest weir with controlled by gates are compared in technology and economy such as water discharge, flood level, structure safe stabilization and the project investment. At last, the maze weir program is best among the three ones.

通过对WES实用堰、迷宫堰、闸控式宽顶堰三个改建方案在泄流量、洪水位、结构安全稳定性、工程投资等技术、经济比较，综合评价选出迷宫堰方案为最优方案。

As an example,the overtop failure probability of a dike under different floodwater standards is analysed using measured annual maximum flood level at a hydrological station.

由于水工结构的功能不同，其设防洪水位的影响因素也不同，要确切地对各种水工结构的洪水位进行分析是比较困难的。

According to the altitude of slack water deposit termination which has fine indicative significance, the water level of a paleoflood can be determined and the discharge of the paleoflood can be calculated using hydraulic model.

同时根据符合条件特征的平流沉积物尖灭点高程，分析确定古洪水位，进而采用逐步回水曲线模型推求古洪水流量。

Poyang lake, 4600 square kilometers in the normal flooding level, is the biggest freshwater wetland in china, and famous with its extremely abundant biological variety, especially with a large number of the rare and endangerous species,such as Grits lemcogeranus, G. monacha and Ciconia byciana .

鄱阳湖是中国最大的淡水湖泊湿地，正常洪水位面积4600余平方公里，蕴藏着极其丰富的生物多样性，尤以白鹤、白头鹤和东方白鹳等珍稀濒危越冬候鸟分布数量多且持续稳定而享誉全世界。

The river quested 8 feet above flood stage, and experts say the water level won't start falling for another 24 hours.

河水被测出已高出洪水位8英尺，并且专家们说水位在未来24小时内不会降落。

It was revealed that for the period from 1952 to 1998, the effect on the rise of water level was 2 to 10 times higher as by the cause of silts than by cultivation.

结果显示，1952~1998年的47年间，洞庭湖湖泊湿地围垦对江湖洪水位升高影响的相对量是湖泊淤积对江湖洪水位升高影响值的2～10倍。

By analyzing the relationship between land use and flood water level, the capacity of regulating flood of lake and river, and the economic loss, it is found that the unreasonable land exploitation and utilization of the flooddiversion and floodstorage areas, the building of sluices to reclaim land from lakes, and the exploitation of islets in the river are the key factors of land use in the middle reaches of Yangtze River to aggravate flood disasters.

通过定性与定量相结合的方法分析了洪水位、河流湖泊的调蓄能力、洪涝灾害的经济损失等与土地开发利用的关系，论述了长江中游地区土地利用，特别是围湖造田、围垦江洲、分蓄洪区的开发等，与洪涝灾害的关系，指出长江中游地区不合理的土地利用所引起的河湖调蓄能力的下降是加剧中游地区洪涝灾害的重要因素。

The regression analysis method was used to determine the linear relationship of the average flood level and the drainage capacity while the optimization method was used to determine the layout of drainage power.

采用回归分析法确定河道平均洪水位与泵站排涝能力线性函数关系，并运用最优化法最终确定排涝动力的布局。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。