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.

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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.

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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.

本文采用了地理學(xué)與生態(tài)學(xué)相結(jié)合、定量分析與專家集成相結(jié)合男女交配视频免费观看、遙感圖像解譯和地理信息系統(tǒng)相結(jié)合的方法亚洲天天影院色香欲综合，對(duì)研究區(qū)的生態(tài)地理背景和已有研究工作進(jìn)展情況給予了全面的分析和闡述；通過(guò)對(duì)區(qū)域水分條件（大氣降水成人网站日韩在线视频观看免费、土壤水分條件）av在线www天堂网、植被、土壤www.ccfdmy.com、土地利用／土地覆被狀況等環(huán)境要素的時(shí)間與空間特征的對(duì)比分析农村高清性色生活片，探討了研究區(qū)內(nèi)部生態(tài)地理特征的差異；在一定的原則指導(dǎo)下欧美黑妞A片黑妞BBW，通過(guò)建立指標(biāo)體系国产一区二区三区在线视频，以可拓工程方法和模型為支撐，經(jīng)過(guò)綜合分析確定了研究區(qū)內(nèi)半濕潤(rùn)99日韩精品、半干旱區(qū)界線劃分方案搞女人的B黄色AA毛片AA；通過(guò)遙感圖像解譯、典型站點(diǎn)多年降水與溫度的小波分析影视大全高清版官网在线观看、土地沙漠化時(shí)空變化的對(duì)比分析等人人妻人人澡人人爽精品欧美一区，說(shuō)明了研究區(qū)域?qū)θ蜃兓捻憫?yīng)粗暴大黑鳮巴视频欧美中文；表明了該區(qū)域所面臨的主要環(huán)境問(wèn)題。

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

副熱帶高壓的年際變化是華北5月降水年際變化的主要原因国产专区欧美精品激情。

The paper focuses on the tetraploidy black locust on Loess plaeatu of West Shanxi province, applys steady state promoter method and image processing technology to study the days transpiration water consumption in different weather ,different seasons and different site conditions,has primary analysis on the impact of environment on the transpiration and carries on the calculation to the tetraploidy locust tree by the single leaf water consumption to the single tree water consumption in CaiJiachuan watershed; Uses fast weighing method to measure and analyze the transpiration water consumption of five different herbs under the tetraploidy black locust forest (Capillary Wormwood,Vanilla,Agropyron Sristatum , Common Sowthistle and Medicago Sativa) in short time, in the same and different growcrop,and calculates the average transpiration water consumption per square metres ;the soil colome weighing method was used for determining diumal variation quantity of soil moisture evaporation, analyzing the dynamic variation and caculating the total quantity of soil evaporation water consumption from May to August ; then 5 kind of suppositions about the types of surface vegetation coverage are proposed in experimented site and the total evapotranspiration water consumption are calculated under 5 suppoitions ,aim at providing preliminary theoretic basis for ascertaining the transpiration water consumption of tetraploidy black locust forest,controling standing forest density and optimizing the forest grass deploy on loess plaeatu of west Shanxi province .

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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

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And the variation on first canonical correlation represents49.10% total variation.

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Tolerance is the amount of variation permitted in the part or the total variation allowed in a given dimension.

公差是工件允許的偏差值或所給尺寸的全部偏差值總和。

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...

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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.

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