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。
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。
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。
应用推荐