On the basis of the analysis of factors affecting the river water level, the BP neural network model, based on the gradient descending algorithm, is used to calculate the river water level.
在分析影响河道水位因素的基础上，采用基于梯度下降算法的BP神经网络模型推算河道水位，同时采用传统的上下游水位线性相关方法进行水位推算。
In the similarity analysis of floods, the extension model is developed which takes the average water level and average flow of key stations as two characteristic indices.
场次洪水的相似性分析中，以时段内流域主控站平均流量和平均水位作为特征指标建立可拓评判模型。
This article analysis level, quality of ground water in suburb of Qiqihar city and its pollution situation, and put forwards 4 countermeasures.
本文详细分析了齐齐哈尔市城郊区地下水水位、水质及水质污染现状，并提出了4条调控措施。
The observational Results of well water level in eastern Gansu province and its Adjacent zone during 1984~1996 are recommended, and the harmonic analysis results of 6 well level are given.
介绍了甘肃省东部及其相邻的西海固地区1984～1996年间6口深井的水位观测结果及其调和分析结果。
Formerly, the barometric, solid tide and sea tide coefficients in water level change were usually calculated by means of regression analysis method in the time domain.
计算井水位气压系数、固体潮系数和海潮系数以前主要在时间域内一般用回归分析的方法。
Analysis of record data show that water-level variations after earthquakes can be classified into two types in form: fast oscillational change and continuous monotonous changes.
通过分析大量的水位记录资料，可从形态上将震后水位变化分为两类：快速的振荡变化和持续的单调变化。
This paper makes an analysis on the causes of coupling effect in a two-sectional drum water level control system.
本文根据两段式水位调节系统的特点，分析了耦合作用产生的原因。
Focus on the water resources and water environment information inquiry, analysis and appraisal of drainage basin level.
主要侧重于流域层次的水资源与水环境信息查询、分析和评价。
By the detailed analysis of hydro geological structure of the lake, to take appropriate curtain technology can reduce discharge flow of the lake and the water level remained stable.
在详细分析研究泉湖区水文地质结构的基础上，采取适当的阻水帷幕技术，即可减少泉湖排泄流量，保持稳定水位。
The correlation slope of strain and water level in same borehole at the Urumqi station is computed by the regression analysis and the anomaly of slope is identified by the sieve variance method.
利用回归分析求解乌鲁木齐台同一钻孔内应变和水位的相关斜率，并用筛选法方差判定其异常，研究相关斜率和地震的关系。
In this paper, the relation among the water level, area and volume of inundation in the test region is defined by selecting proper test region, setting up its DEM and using regression analysis.
通过选择适当的试验区，建立其DEM，利用回归分析确定了试验区内淹没水位、淹没面积与淹水量三者之间的关系。
The total quota of water use in different level of water saving was put forward based on regression analysis, probability estimation analysis, advanced quadratic mean method and geometric mean method.
通过逐步回归法、概率测算法、二次平均先进法和简单几何平均法得到北京市宾馆不同节水水平下综合用水定额值；
On the basis of analysis of conventional drum water level control mode for boiler and existing problems, a dual inputs single output fuzzy water level control system is stated.
在分析常用锅炉汽包水位控制方式存在问题的基础上提出了双输入—单输出汽包水位模糊控制系统。
It was demonstrated by the correlation analysis between air pressure, water level and gravity that the interference of air pres - sure is much larger than that of water lever.
通过对重力、气压、水位的相关分析表明气压的干扰远大于水位的干扰。
From the water resources potential of Hanjiang river and its utilization level, analysis was made on the transferable water quantity.
本文从汉江水资源条件及利用现状分析了汉江的可调水量。
Study on deep aquifer's water level and water temperature dynamics is mainly by the describing of the morphologic variation and the analysis to annually dynamic character at present.
研究深层含水系统水位、水温动态，目前多以变化形态的描述和年动态特征的分析为主。
Using observation data of underground water level proves to be a comparatively reliable method for inversion analysis of seepage parameters for fractured rocks.
利用地下水位的观测资料对岩体渗透参数进行反演是较为可靠的方法。
Multi-path model is used to analysis the direct and indirect influence of population, regional gross product, consumption level and household water supply on house refuse and sewage.
通过构建多元通径分析模型，定量分析中国各地区人口总数、生产总值、居民消费水平和生活供水用水量对生活垃圾清运量和生活污水排放量的直接影响和间接影响。
According to damage mechanical analysis, the soil body damage level increases with increasing of water content of soil and a catastrophe point of damage variable exists.
引入损伤力学理论对不同含水量土体的损伤影响分析说明，随含水量增大，土体损伤程度加强，并存在损伤变量突变点。
Therefore, analysis and design of ground water level data acquisition system has an important practical meaning.
论文针对地下水水位数据采集系统进行分析和设计，具有重要的现实意义。
From the point of view of energy-saving, this peper gives a quantitive analysis of the impact of no-water-level operation of feedwater heaters on the economic performance of power plants.
本文从节能角度出发，定量地分析了加热器无水位运行对火电厂热经济性的影响。
Threshold analysis of water body eutrophication can provide scientific basis for controlling water bloom and defining pollutants rational control level.
水体富营养化阈值分析可为控制水华暴发，确定合理的污染物控制水平提供科学依据。
The analysis shows that water vapor pressure decreased with the increasing of sea level elevation;
分析表明：随着海拔高度的增加，水汽压逐渐减小；
The analysis of data for pressure at the well bottom shows that the well pressure acquired through calculation by using the water level and water temperature which are easily observed on ground has...
井下压力测试资料统计分析证明，利用在地表上容易观测到的水位、水温资料计算出的井下压力，达到了与下井仪器相同级别的工程测量精度。
The analysis of data for pressure at the well bottom shows that the well pressure acquired through calculation by using the water level and water temperature which are easily observed on ground has...
井下压力测试资料统计分析证明，利用在地表上容易观测到的水位、水温资料计算出的井下压力，达到了与下井仪器相同级别的工程测量精度。
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