查询词典 indefinite total variation

Based on the correct short-range numerical forecast for climatic situation the accuracy is about 70%using statistical interpretation forecast method, and if the abnormal variation of mean monthly circulation could be predicted, the trend of abnormal frequency variation could be predicted.

在短期气候数值形势预报准确的基础上，应用统计释用预报方法所得的准确率为70%左右，若能预报出汛平均环流的异常变化，则可确定ATC汛频数的特多年或特少年。

Based on the spherical cap harmonic models of the geomagnetic field and its secular variation, the geomagnetic charts, the anomaly charts for 2000 and the secular variation charts for 2000~2005 are drawn.

依据地磁场及其长期变化的冠谐模型，分别绘制2000年中国地磁图和异常磁场图，以及2000～2005年地磁长期变化图。

This pump configuration, which is adopted here in experiments, makes pump feature quick displacement variation and high reliability due to the direct drive of displacement variation mechanism by servo valve and reset of maximum displacement by balance spring.

液压泵的斜盘由弹簧复位到最大排量，工作中伺服阀直接驱动变量机构，有利于提高变量响应的速度和液压系统的安全性。

He danced numerous performances including: Red Detachment of Women, Swan Lake, The Nutcracker, Romeo and Juliet, Coppelia, Don Quixote, La Sylphide, Variation for Four, Allegro Brilliant, Theme and Variation, Stamping Ground,The Four Last Songs, etc.

曾出演的节目包括︰红色娘子军，天鹅湖，胡桃夹子，罗密欧与朱丽叶，葛培莉亚，唐吉柯德，仙女，古典男子四人舞，辉煌的快板，主题与变奏，肖斯塔科维奇钢琴协奏曲，四首最后的歌等。

Modern approach methods of geography, ecology, quantitative analysis, expert integration, remote sensing image analysis and geographical information system were combined to reveal the matters in this paper. The eco-geographical background of the research area and the research work studied by other scholars were comprehensively expatiated. The temporal and spatial variation of precipitation and soil moisture, vegetation and soil distribution, and land use/land cover were compared as well. On the basis of foregoing analysis, the eco-geographical differentiation was discussed. According to principles and indicators, with extension engineering method and integrated analysis, the physical geography boundary between subhumid and semiarid areas were demarcated. By using remote sensing image analysis, wavelet analysis of the perennial precipitation and temperature, and the comparison of temporal and spatial variation of the desertification, this paper accounted for the regional response to global environmental change and suggested the dominant environmental problems.

本文采用了地理学与生态学相结合、定量分析与专家集成相结合、遥感图像解译和地理信息系统相结合的方法，对研究区的生态地理背景和已有研究工作进展情况给予了全面的分析和阐述；通过对区域水分条件（大气降水、土壤水分条件）、植被、土壤、土地利用／土地覆被状况等环境要素的时间与空间特征的对比分析，探讨了研究区内部生态地理特征的差异；在一定的原则指导下，通过建立指标体系，以可拓工程方法和模型为支撑，经过综合分析确定了研究区内半湿润、半干旱区界线划分方案；通过遥感图像解译、典型站点多年降水与温度的小波分析、土地沙漠化时空变化的对比分析等，说明了研究区域对全球变化的响应；表明了该区域所面临的主要环境问题。

Interannual variation of subtropic high is the main cause of interannual variation of the rainfall in May over North China.

副热带高压的年际变化是华北5月降水年际变化的主要原因。

For the variation curves of the shear force, bending moment and torsional moment of the wing along the lines of span , the variation trends of rigid and elastic proportions are the same as result 1

机翼剪力、弯矩和扭矩随翼展变化的曲线中，也同样是刚体部分所占的比例不断减小，弹性部分所占的比例不断增加

Obtains the variation regularity of indoor air pollutants, that is, their concentrations decrease after decoration. However, the concentrations may go up transitorily with the variation of indoor air temperature, relative hum...

得出了装修后室内污染物浓度的变化规律，即污染物浓度随时间推移而降低，其间可能会由于房间温度、相对湿度和气流组织的变化而出现短暂的起伏。

The following results are made from this research: Assessing data quality and band combination of different bands in line with geo-target features in desertification areas, and determining basic bands for desertification monitoring. And understanding and studying the spectral features and variation rules of geo-targets in the experimental area, raising that it is the basis of geo-targets information collection with imaging spectrometer data to understand spectral features and variation rules of geo-targets, realizing that in a great extent spectral-integrated-form-based classification method can remove the phenomenon of "different spectrum with same objects" resulted from reflection ratio curve translation because of the angle change among sensor, targets and observation direction, and the average and variance images can be introduced to solve the problem of two kinds of geo-target with similar spectral forms and much different values of whole reflectionratio. It is suggested that "red edge" range bands of vegetation, which has close relationship with vegetation cover and biomass, is the main characteristic bands and important basis for careful vegetation classification and quantitative retrieval, and pixel-based derivative spectral analysis is very useful for removing the effects of soil background values and quantitatively retrieving vegetation biomass and cover. The remote sense quantitative retrieval model is developed for main appraisable factors of desertification monitoring assessment with imaging spectrometer data and then the applicability of model is analyzed.

研究结果如下：首先针对荒漠化地区的地物特征，对高光谱数据不同波段的数据质量、波段组合进行了评价，提出了适用于荒漠化监测的基本波段选择集；初步了解和掌握了研究地区的地物光谱特性及变异规律，进一步明确了掌握地物光谱特征和变异规律是用成像光谱仪数据提取地物信息的基础；发现了基于光谱整体形状的分类方法在很大程度上能够消除由于传感器、地物目标观测方向之间的角度变化引起的反射率曲线整体平移的"同物异谱"现象，对于谱形相似而整体反射率的值相差较大的两类地物，通过引入均值和方差图像参与分类得到解决；研究还表明在植被"红边"范围内的波段是进行荒漠化监测的主要特征波段，这些波段与植被生物量和盖度都有密切的关系，是开展精细植被分类研究和植被定量反演的重要基础；像元的导数光谱分析可以消除土壤背景的影响，是进行植被生物量和盖度定量反演的有力工具；建立了荒漠化监测主要评价因子的定量反演模型，并分析了模型的适用性。

On the base of other researcher, the *** from the basic equations of stable current field to derived the expressions of boundary problems under 3-D condition. Without considering the EM effect and using the generalized variation principle, we can get the corresponding variation equation. Thronging subdivide the 3-D model, interpolation, analysis, and general synthesis with the triangular prism element, we can carry out the simulation on frequency-domain IP\'s parameters under level and undulate topography.

在前人工作的基础上，在忽略电磁效应的情况下，从稳定电流场的基本方程出发，推导了三维区域满足的边值题目，用广义变分原理得到相应的变分题目，通过用三棱柱单元对大地模型进行剖分、插值、总体集成，最后解方程，得到每个节点上的复电位值，最后实现了水平和起伏地形等条件下的激电参数的数值模拟。2。

The small blue capacitor has very high chances to go fully shorted compare to electrolytic capacitor which is very rare.

小蓝电容器具有很高的机会去充分地缩短了比较电解电容器，这是非常罕见的。

In the Italian campaigns of 1513 and 1515, when the Swiss won the victories of Novara and Marignan, he acted as army chaplain.

在意大利的运动， 1513年和1515年，当瑞士赢得了胜利，诺瓦拉和marignan ，他担任军队的牧师。