查询词典 fluctuation

We studied responses of populations of Microtus ochrogaster and M. pennsylvanicus in east-central Illinois, USA to supplemental food in intermediate and low food habitats. Whereas amplitudes of fluctuation of M.

本研究在美国伊利诺斯州中东部测定了中等食物质量和低食物质量栖息地内橙腹田鼠和草原田鼠(M.pennsylvanicus)种群对附加食物的响应。

This region has been put fourth regional groundwater resource evaluation from year 1956 to 2002. These evaluation all take Quaternary groundwater resources as exploited study objectives, evaluate plains and montanic groundwater separately, didn"t consider overall portray groundwater hydrological system relation between input and output, couldn"t simulate groundwater hydrological process with circumstance fluctuation. Therefore, it"s necessary to reevaluate Sanjiang Plain"s groundwater resources on the basis of predecessors study.

该区自1956年至2002年主要进行了四次区域性的地下水资源评价工作，这些评价均以第四系地下水资源为研究对象，以开发为目的对平原区和山丘区地下水资源分别评价，没有考虑全面刻画地下水文系统输入输出的转化关系，无法模拟变化环境下的地下水文过程，因此，有必要在前人研究的基础上，重新评价三江平原地下水资源。

The electricity price curve in electricity market possesses the features of multicycle and strong fluctuation, whereas there is evident error in the prediction by grey GM(1,1) model with exponential growth, for this reason the authors propose a period residual modification based grey price forecasting model, which not only inherits the advantages of grey model but also makes the forecasting curve fluctuated by means of smooth processing of original data, improvement of initial condition and period residual modification.

电力市场中的电价曲线具有多周期、跳跃等特性，而呈指数增长的灰色GM(1，1)模型预测误差较大，为此，文章提出了基于残差周期修正的灰色电价预测模型。

Habitat ; Nectariferous plants ; Wasp ; Population fluctuation ; Bee distribution.

栖息环境；蜜粉源植物；胡蜂；种群消长；蜜蜂分布

In neritic area, the variable period reverberation caused by seabed terrain fluctuation is the main disturbance factor to the seismic data quality. The existing methods of suppressing seabed reverberation had some deficiencies more or less and so they cannot completely eliminate the reverberation interference.

在滩浅海地区，由海底地形起伏引起的变周期鸣震是影响资料品质的主要干扰因素，已有的压制海底鸣震的方法，或多或少存在着一些不足，不能达到完全消除资料上鸣震干扰的目的。

The results show that the Reynolds stresses of the flow near the wall at the exit are abviously nonisotropic and the flow fluctuation transport downstream with the flow speed.

结果表明埋入式进气道出口近壁区气流的雷诺应力呈明显的各向异性，其上游的气流脉动是按气流平均速度向下游传输的。

At last, the proposed algorithm is simulated under such conditions as sinusoidal voltage, nonsinusoidal voltage, frequency fluctuation, sampling frequency and sampling time length in change.

最后分别在电压无畸变、电压含谐波、电压频率波动、采样频率以及采样时间长度变化时，对文中提出的介损测量正交分解法进行仿真验证，并与谐波分析法进行比较分析。

This paper explains the difference and relation of the three kinds ensembles in statistical mechanics by analyzing fluctuation between the numble of articles and energy and the relation in numble of articles and energy between average and maxium.

本文从粒子数和能量的涨落和粒子数和能量的平均值与极大值之间的关系，说明统计物理中三种系综之间的区别与联系。

This article states and briefly analyzes some unknown characteristics of the economic effects of education, such as unequal effects, bi-polarity, occasionality, fluctuation, multi-phenomena, phases and float.

根据十多年来在 2 3个省市进行的教育与社会调查，结合教育经济学理论分析，本文提出教育对经济产生作用的不等效性、两极性、或然性、波动性、多象性、位相性、漂移性等尚未为人们所认识的特性，并加以简要分析

We think the factors play important roles on real estate market prosperity, including the relationship between RMB and US dollar, overabundant liquidity, the growth of real estate loan and its structural change, the flow-in and flow-out of foreign funds, the stock market fluctuation and the moving population.

针对上海房地产市场的繁荣，认为人民币与美元汇率的关系、流动性过剩、房地产信贷增长及其结构变化、外资流进流出、股市波动、人口流入等因素起着重要的推动作用。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。