1) empirical frequency curve
经验频率曲线
1.
In order to correctly evaluate the trophic state of a lake and then to establish a scientific basis for the prevention of lake eutrophication, a lake eutrophication stochastic assessment method (LESAM) by using empirical frequency curve (EFC) is proposed.
本文提出了基于经验频率曲线的湖泊富营养化随机评价方法。
2) empirical frequency
经验频率
1.
Estimation of first empirical frequency confidence region of historical floods recorded at Tian e Hydrometric Station;
天峨水文站历史洪水首项经验频率置信区间估算
2.
In frequency computation of hydrology, empirical frequency has a significant effect on the results of the curvefitting method.
水文频率计算中，经验频率对适线法的结果有重大影响。
3) experimental frequency
经验频率
1.
Programming with VB6 for hydrologic experimental frequency curve-fitting software;
用VB6编写水文经验频率适线软件
2.
For application in planning and design,it is necessary to retrieve the burst flow volume to check the reasonableness of the flood calculation,and to estimate the experimental frequency of the peak and flood volume of the extraordinary floods occured in Nenjiang River and Songhua River in 1998.
为了提供工程规划设计应用，有必要对１９９８年嫩江、松花江特大洪水资料进行决口水量还原、校核和合理性检查，并合理估算洪峰、洪量的经验频率。
4) frequency curve
频率曲线
1.
Research on optimality technology of frequency curve of step motor in control of PLC;
PLC控制的步进电机频率曲线优化技术研究
2.
Theoretical frequency curves and their application in engineering problems;
理论频率曲线及其在工程问题上的应用
3.
Based on the field data of the Weihe River from 1990 to 2000, the dynamic change of water quality was studied by use of the method of frequency curve.
为了解渭河陕西段主要污染因子的污染历时现状,对渭河陕西段的年径流量与水质污染程度的关系以及在不同水期水环境的质量进行了分析,利用1990~2000年系列水质监测料,采用频率曲线法分析研究了渭河陕西段水质的动态变化规律。
5) statistical curve
经验曲线
1.
Introduce a format of the statistical curve fitted by multi-dimensions least square.
给出了多维最小二乘法拟合经验曲线的格式。
6) empirical curve
经验曲线
1.
In this model, empirical curve method isadopted for opened diversion channel, and broad crest weir theory is adopted for the river kerf.
介绍了三峡工程大江截流的特点及开展本项研究的必要性，建立了导流明渠采用经验曲线法、龙口应用宽顶堰理论~［1］的三峡工程截流期水力学要素预报模型。
补充资料：频率曲线
见水文频率分析。
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