水面率

应用MODFLOW软件进行数值分析，给出特征点处地下水位随时间的变化规律，并提出现状封闭率条件下的适宜水面率。

Through numerical simulation using Software MODFLOW , the temporal change rules of groundwater table at characteristic spots are educed , and feasible area ratio of water surface is put forward .

行洪除涝的合理水面率研究

Research on the Rational Surface Water Region Ratio for Transfer Flooding and Drainage

南方圩（湖）区最优水面率研究平原圩区治涝与内湖综合利用问题

The Study on Optimum Ratio of Water Surface in Plain Polder Areas of Southern China

除了城区内部的河道整治外，还应重视城区河网水面率的研究。

The water surface rate of river in the urban area should also be investigated as well as the river regulation within urban area .

以往，大都是通过不同水面率的设计方案比较，来选择一个较好的方案。

In order to obtain a better method , the current one is through the comparison of alternatives possessing different ratio of water surface .

随着上海城市化进程的推进，保持适度的水面率、恢复河网水系的结构和功能对上海城市生态环境建设至关重要。

Along with the urbanization process of Shanghai , maintaining appropriate water surface ratio ( Wp ) is of great importance to the eco-environment construction of the city .

建立了确定合理水面率的结构模型和数学模型、河网水域水动力学模型、方案优选的经济模型，明确了其求解方法。

Structure model and mathematics model for determining rational surface water region ratio , hydrodynamic model for river net and economy model for scheme choice , are set up .

结果表明，上海市河道的水面率、河道密度、边界密度、分形数的空间分布特征表现为中心城区低，郊区高的趋势；

The spatial distribution characteristics of water coverage , density , edge density and fractal dimension of watercourses in shanghai City tended to be lower in central urban area , but higher in the suburban ;

苏南城市化进程迅速，圩区水面率对于当地的城市规划、城市防洪除涝保安全十分重要。

Regions in southern Jiangsu province are on the course of rapid urbanization , thus the surface water ratio of the polder is of vital importance to the local city layout , flood control and drainage layout to ensure the city security .

3个控制断面在最小流量下的水面宽率分别为35.8%，20.6%，40%；

The ratio of river width is respectively 35.8 % , ( 20.6 ) % , 40 % ;

在单种助剂的实验中，采用硬脂酸、硬脂酸铝、棕榈酸、聚乙烯醇和十二烷基苯磺酸钠制备出的粉体水面遮盖率较小，表现都不佳。

In the research of single additive , water coverage of the powder used stearic acid , aluminum stearate , palmitic acid , polyvinyl alcohol and SDBS was small .

而采用复合助剂有利于改善单种助剂使用时的缺点，使粉体的水面遮盖率明显增加，有利于改善球磨效果和产品的粉体性能。

The composite additives can help to improve the shortcomings of single additives . It makes the water coverage significantly increased . And it also can improve the milling and the performance of the powders .

基于以上所述，考虑到糙率等非确定因素的影响，可以得到水面曲线和糙率计算的连续&离散非线性随机模型。

Therefore , a nonlinear continuous-discrete stochastic model of computation of profile and roughness may be established in which some uncertain factors .

正是这个时候，希腊的外债问题渐渐浮出水面，债务收益率飙升，从而蔓延到整个欧元区。

It was during this period that the Greek sovereign debt problems surfaced , sending yields on Greek government bonds rocketing , and threatening contagion across the euro zone .