1) multi time-scale power systems
多时间尺度电力系统
1.
Correction of stability boundary of multi time-scale power systems
多时间尺度电力系统稳定域边界校正法
2) multi-time scale system
多时间尺度系统
3) multiple time scales
多时间尺度
1.
Based on Morlet wavelet transform ,the multiple time scales feature of flood season daily maximum flow series at Yichang gauging station have been analyzed in the base of 120 years(1882-2001) daily real data of water discharge.
以宜昌站120年(1882—2001年)实测日流量资料为基础,利用Morlet小波变换对其汛期日最大流量过程进行多时间尺度变化特性分析。
2.
Based on Marr wavelet and Morlet wavelet transform, the multiple time scales and jump features of 100 years annual average runoff at Yichang station of Yangtse River have been analyzed.
以长江宜昌站近 10 0年 (1890～ 1987)年平均流量过程为例 ,利用Marr小波和Morlet小波变换对水文序列的多时间尺度演变特性进行了分析。
3.
In this paper,wavelet transformation method is applied to study the multiple time scales of annual precipitation characteristics of Yantai from 1960 to 2004.
为研究烟台市年降水量变化的多时间尺度结构特征,采用Morlet子波变换分析法,对烟台市1960~2004年的年降水量进行了小波分析。
4) multi-time scales
多时间尺度
1.
Based on the precipitation sectors defined by climate-predicting workshop of national climate center of China, this paper analyzed the multi-time scales characters of area monthly precipitation in China with the wavelets method in terms of the area monthly precipitation index data from January of 1951 to December of 1998.
根据国家气候中心气候预测室的降水分区方法 ,使用 1 95 1年 1月到 1 998年 1 2月的分区月降水指数资料 ,采用小波分析方法分析了中国区域月降水的多时间尺度特征。
2.
Based on data of the monthly mean winter temperatures and summer precipitations of 1951 to 2007 observed by Wuhan Climate Station,the multi-time scales characteristics of winter temperatures and summer precipitations and the extreme climate has been analyzed using MHF(Mexican hat function).
利用武汉1951~2007年的冬季气温和夏季降雨量的观测资料,用MHF(墨西哥帽函数)小波分析了武汉冬季气温和夏季降雨量的多时间尺度变化特征并对出现的极端气候进行了一定分析。
5) multi-time scale
多时间尺度
1.
The complex multi-time scale structure of the ISDI variation is studied.
利用1951~2004年54年88个站3~5月日降水量资料,计算云贵喀斯特地区春旱强度指数,对该区春旱强度指数时间序列进行小波分析,揭示云贵喀斯特地区春旱强度指数变化的多时间尺度的复杂结构。
2.
Local characteristics of PM10 concentration variation is analyzed,which indicate that its multi-time scale of both seasonal and annual variation is at variance,being affected by the factors in association with meteorology and emission source.
文章利用Morlet小波函数进行小波变换,以乌鲁木齐市的大气污染物时间序列为例,分析了当地PM10的多时间尺度的演变特性。
3.
New achievements from the research on multi-time scale unified simulation and modeling for AC/DC power systems are summarized.
综述了以电力系统分析软件为基础的交直流电力系统多时间尺度全过程仿真和建模研究的新成果。
6) multiple time-scale
多时间尺度
1.
Based on EMD the multiple time-scale analysis to the changes of natural annual runoff of the Guanting Reservoir;
基于EMD的官厅水库天然年径流量变化多时间尺度分析
2.
Through analyzing problem of wavelet analysis,the annual runoff time series from 1956 to 2000 of Hejin hydrological station in Fen River are decomposed into multiple time-scale series with EMD method.
针对小波分析的不足之处,运用EMD法对汾河河津水文站还原后的天然径流量时序进行多时间尺度分析,并揭示了各分量的趋势变化及影响因素。
3.
By analyzing problems of wavelet transform,the natural annual runoff time series from 1956 to 2000 of the Zhuangtou hydrological station on the Beiluohe River are decomposed into multiple time-scale series with EMD method.
针对小波变换的不足之处,运用EMD方法对北洛河下游控制站状头水文站1956~2000年的还原后的天然年径流量时序进行多时间尺度分析,发现北洛河的天然年径流量变化存在准2~4年、准4年、准8~10年、准22年的波动周期,并分析了各分量的趋势变化。
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