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In order to find the reasons, we first investigated the distribution of the geothermal stations and the water extraction in the whole Shenzhou city and its vicinity, then investigated the oil extraction and water afflux in North China Oil Field.
为解释该趋势下降的原因,首先对深州市及其周边地区地热开采点的空间分布及地下热水开采量进行了详细调查,而后对华北油田采油和注水情况进行了了解。
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A theoretical model is built to investigate the simulation of the infrared characteristic of the metal structure with the PCM false target.Structure parameters of the PCM false target that suit for the simulation are investigated numerically.According to the results,further request on the improvement of the thermal conductivity of PCM is presented.An experimental platform is built and the numerical model is validated experimentally.Three key thermal characteristic components of the false tank(barbette,wheel and front armor plate) are manufactured and tested,and good results are obtained.A method for the thermal conductivity enhancing of PCM by using aluminum fins is studied,the influence of the structure parameters of PCM plates to the simulation effects are investigated numerically,and the reasonable configuration parameters of the PCM plates used to simulate the steel plates of different thickness are obtained.In the study of the application of heat convection method in IR false target,a passive infrared simulation system is designed to simulate the infrared characteristic of metal constructions.The system is made up of pipe-plate,pump,receiver,and working fluid.
在相变材料应用于红外示假的研究中,通过数值模拟,研究确定了适用于制作假目标的相变材料各物性参数的范围,分析了相变材料制作假目标的可行性,并根据所得结果,选取石蜡为研究对象,建立了相变材料模拟金属构件红外特征的理论模型,研究了适用于模拟各金属构件红外特征的相变材料假目标的相关结构参数,得出了相变材料假目标模拟各金属构件红外特征的理论结果,并对相变材料的导热系数这一物性提出了进一步的改进要求;搭建了假目标实验平台,验证了所建理论模型的准确性;以坦克假目标为研究对象,制作了炮塔、负重轮和前上装甲板三个坦克假目标的关键红外热特征部件,并进行了野外实验,取得了较好的结果;以添加铝肋片作为改进相变材料导热能力的手段,理论研究了此类导热增强型相变材料的相关结构参数对模拟效果的影响,得出了模拟不同厚度钢板红外特征的导热增强型相变材料的结构参数及模拟效果。
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For gas flow past cylinder, the characters of flow field in different Mach number and Knudsen number condition were investigated, and especially for low Knudsen number cases, the results were compared with calculating results of Euler's equation. It showed that they are correspondent by comparing the characters of bow shock and wake. The convergence rates of different high resolution and implicit schemes were also investigated. The convergence behavior of the implicit WENO scheme developed in this paper is better than others. For gas flow past NACA 0012 airfoil, the calculating results were compared with results of experiment. It showed that the results of WENO scheme are of higher accuracy for the case with angle of attack.
在圆柱流场时,我们探讨不同马赫数且不同纽森数时的流场特性,并在低纽森数时,与那维尔-史托克方程式的计算结果比较,我们比较了弓形震波及尾流附近的特性,其结果是相当符合的,同时我们也比较不同高解析隐式算则的收敛历程,从收敛历程图可得到,本文发展出来的隐式WENO算则有较佳的收敛效果;在NACA 0012翼形的流场中,我们将与实验结果做比较,发现利用WENO算则计算的结果,对於具有攻角的流场,亦有相当高的准确度。
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Major content of this work includes five aspects as follows:(1). Oxygen sensitive materials had been prepared by carrier covalence method, and the preparation mechanism of the materials had been investigated by FI-IR, SEM, and the detection experiment of oxygen. Then through the detection of oxygen, the sensitivity and stability had been estimated, and it was studied that the properties of materials would be affected by the various factors.(2). Oxygen sensitive materials had been prepared by carrier covalence-cross linking method, and the preparation mechanism of the materials had been investigated by FI-IR, SEM, and the detection experiment of oxygen. Then through the detection of oxygen and spectrophotometer, the sensitivity and stability had been estimated, and it was studied that the properties of materials would be affected by the various factors.(3). For the detection of gaseous oxygen, the fiber optical sensor on basis of oxygen sensitive materials had a respond time of 10s, detection limit of 5ppmand detection precision of 0.5%. The sensor had good repeatability and stability, a less delay and at least 1 year life-span.
本论文主要包括以下五个方面的内容:(1)载体共价法制备氧敏感材料:通过红外光谱、扫描电镜图谱和氧测试实验探讨该氧敏感材料的制备机理,通过氧测试实验评价该氧敏感材料的氧敏感性和稳定性,同时研究了各种因素对该氧敏感材料性能的影响(2)载体共价—交联法制备氧敏感材料:通过红外光谱、扫描电镜图谱和氧测试实验探讨该氧敏感材料的制备机理,通过氧测试实验和分光光度计评价该氧敏感材料的氧敏感性和稳定性,同时研究了各种因素对该氧敏感材料性能的影响(3)氧敏感材料在光纤气态氧传感器中的应用:该传感器的响应时间为10s,检测下限为5ppm,检测精度为0.5%,具有较好的重复性和稳定性,迟滞较小,使用寿命至少为1年,适合各种环境下气态氧浓度的检测。
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Two framework have been investigated carefully and presented in this thesis. The 18O(1D) reaction with cyclopropane has been investigated using the eletron impact ionization based universal crossed molecular beam techniques.
在环丙烷与单重态氧原子反应的实验中,反应产物经由飞行时间谱的测量,至少有四个反应通道被发现,分别是氢原子形成,氢分子( H2)形成,乙烯( C2H4)形成以及氢氧基形成的过程。
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Health workers in Health 8 areas have much rational change in concept, knowledge, and behavior on use of drugs. 76.88 percent of investigated people have rational concept, 85.95 percent of investigated have rational knowledge and 73.42 percent of investigated pay more attention to RUD.
项目实施后,卫生Ⅷ项目地区76.88%的被调查对象具有了正确的用药观念,85.95%的被调查对象掌握了合理用药知识,73.42%的被调查对象认为更加注重合理用药管理和合理处方行为,医务人员的用药观念、知识、行为渐趋合理。
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Methods Prevention and cure measures to control contagion were put into practice.Malaria and skeptical cases were investigated in population.Secondary cases were prevented.Incidence of Malaria was investigated by random sample method with IFAT and density of vector was also investigated;Epidemic trend was analyzed.
实施以控制传染源为主的防制策略,在各类人群中开展疟疾病例侦查,防止继发病例;采用间接免疫荧光技术随机抽样调查居民患病情况和媒介密度;综合分析疟疾流行趋势。
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Among all persons who finished questionnaire 21.68% were resident physician,36.95% were attending physician, 25.65% were vice chief physician/chief physician; the most common cardiovascular disease in the investigated persons hospitals were angina (55.42%),stroke(38.17%), myocardial infarction(28.70%), heart failure (28.24%), hypertension (28.24%); as for early vascular disease detection methods,57.40% of investigated persons thought artery endothelial function examination,46.72% thought angiography, pulse wave velocity measurement and carotid intima-media thickness measurement were 40.61% and 31.76%;76.49% and 53.89% of the investigated persons thought angiotension converting enzyme inhibitor and statins could revert early vascular disease;96.79% of the investigated persons thought promotion early vascular disease detection strategy could help for reducing total burden of cardiovascular disease in our country;78.47% of the investigated persons thought early vascular disease detection methods should be easily used and non-invasive.
被调查者所在医院最常见心血管疾病顺序分别心绞痛55.42%,脑卒中38.17%,心肌梗死28.70%,心力衰竭28.24%,高血压28.24%;关于血管病变早期检测57.40%的被调查者认为通过动脉内皮功能测定,认为通过血管造影者占46.72%,认为通过脉搏波速度和颈动脉内膜中层厚度测定者分别占40.61%和31.76%;分别有76.49%和53.89%的被调查人群认为血管紧张素转换酶抑制剂和他汀类药物能够逆转早期血管病变;96.79%的被调查者认为推广血管病变早期检测技术有利于降低我国心脑血管疾病总体负担;78.47%的被调查者认为用于推广的早期血管病变检测技术应该是操作方便和无创伤。
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Among all persons who finished questionnaire 21.68% were resident physician,36.95% were attending physician, 25.65% were vice chief physician/chief physician;the most common cardiovascular disease in the investigated persons hospitals were angina (55.42%),stroke(38.17%),myocardial infarction(28.70%),heart failure(28.24%), hypertension(28.24%);as for early vascular disease detection methods,57.40% of investigated persons thought artery endothelial function examination,46.72% thought angiography,pulse wave velocity measurement and carotid intima-media thickness measurement were 40.61% and 31.76%;76.49% and 53.89% of the investigated persons thought angiotension converting enzyme inhibitor and statins could revert early vascular disease;96.79% of the investigated persons thought promotion early vascular disease detection strategy could help for reducing total burden of cardiovascular disease in our country;78.47% of the investigated persons thought early vascular disease detection methods should be easily used and non-invasive.
被调查者所在医院最常见心血管疾病顺序分别为心绞痛55.42%,脑卒中38.17%,心肌梗死28.70%,心力衰竭28.24%,高血压28.24%;关于血管病变早期检测57.40%的被调查者认为通过动脉内皮功能测定,认为通过血管造影者占46.72%,认为通过脉搏波速度和颈动脉内膜中层厚度测定者分别占40.61%和31.76%;分别有76.49%和53.89%的被调查人群认为血管紧张素转换酶抑制剂和他汀类药物能够逆转早期血管病变;96.79%的被调查者认为推广血管病变早期检测技术有利于降低我国心脑血管疾病总体负担;78.47%的被调查者认为用于推广的早期血管病变检测技术应该是操作方便和无创伤。
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The corn ear rot on 51 malze breeds which were made to national test in Sichuan was investigated in 2005.It showed that the rate of corn ear rot was 35.1%, corn ear rot by Fusarium moniliforme was one of the most important, which was counted for 49.1% in all rot ears investigated.In 2006, the corn ear rot on 12 maize breeds which have different genetic background was investigated again.
通过对2005年国家品种区试四川试点的51个玉米品系穗腐病的调查,结果表明,总的穗腐病发病率为23.2%,其中串珠镰刀菌性穗腐病占49.1%,是主要的玉米穗腐病。2006年8月,又对多营农场的不同遗传背景的12个玉米品系进行了调查,结果表明,总的穗腐病发病率为35.1%,其中串珠镰刀菌性穗腐病占77.1%,也是主要的玉米穗腐病。
- 推荐网络例句
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Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.
在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。
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In fact,I've got him on the satellite mobile right now.
实际上 我们已接通卫星可视电话了
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The enrich the peopling of Deng Xiaoping of century great person thought, it is the main component in system of theory of Deng Xiaoping economy, it is a when our country economy builds basic task important facet.
世纪伟人邓小平的富民思想,是邓小平经济理论体系中的重要组成部分,是我国经济建设根本任务的一个重要方面。