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Through plots experiments and 49 field comparison experiments in four seasons of two years, the impacts of different compound proportion of N, P, K and manure on the rice yield were studied.
通过2年4季的小区试验和49个大田对比试验,研究氮、磷、钾及有机肥不同用量配比对杂交水稻产量的影响。
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Order Hilbert ill-conditioned linear equations were solved, and the relative error was less than 0.45%. Numerical experiments verified that the method was efficient compared with the efficient methods used commonly nowadays. Numerical experiments results showed that the conjugate vector base method was suited for solving large-scale ill-conditioned linear equations with fast convergence and high precision.
通过对5000阶的Hilbert方程组进行求解,结果的相对误差小于0.45%,并与当前普遍使用有效的方法进行了比较,数值实验结果表明,该算法适合求解大型病态线性方程组,且具有快速收敛,精度较高的特性。
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Full quanta theory was used in analysis the working principle of laser, educed the photon states of single pattern radiate in two energy-step system, and simulated the establishment of laser mode and statistical distribute of photon.According to elf consistent equations of RLG; build the simulated program with LabWindows/CVI and do some simulation experiments,The result of simulation matched the theory perfect perfectly and conform to the experiments, the locked-in and pattern competition coursed the periodic light intensity.
在激光陀螺自洽场方程组的基础上,运用LabWindows/CVI软件建立了灵活方便的激光陀螺仿真平台,并进行仿真试验,仿真试验结果与理论分析很好的相符合,且能够较好地说明陀螺试验现象,即在闭锁阈值附近,由于闭锁效应和模竞争相互影响,使得激光腔中两行波相互关联,光强差随时间呈周期性变化。
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Surfactants and additives were selected after analysis of theories and experiments. In addition, we established the methods of producing foam and the estimation of stability of foam after we did the contradistinctive experiments.
本文通过理论和实验分析,筛选合适的表面活性剂及助剂,通过起泡方法和泡沫稳定性评价方法的对比实验,确定起泡方法和泡沫稳定性评价方法。
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LoP effects in Experiments 3 and 4 were the same as those in Experiments 1 and 2, respectively. These results suggest that unconscious memory measured by conventional indirect tests is contaminated by conscious memory, and conscious memory separated by the process-dissociation procedure may be underestimated under some conditions.
综合本研究结果显示:利用传统的间接性指导语所测得的非意识记忆,常已是受意识回想记忆的污染;在某些情况下,利用「历程分离程序」所测得的意识回想记忆,可能会有低估的情形。
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The first part mainly introduces the background of this research and the practical significance of demonstration; The second part mainly introduces the gist of this research; The third part mainly introduces the study of the experiments of this teaching material in details; The fourth part mainly introduces the circs of the experiments carried out in senior high school; The fifth part mainly expatiates the experience and the countercharge.
第一部分主要介绍了课题研究背景和现实意义,第二部分主要介绍了研究的理论依据,第三部分介绍了对苏教版高中化学必修教材中"活动与探究"所涉实验的具体研究,第四部分详细介绍了对"活动与探究"所涉实验在中学的实际开设情况的研究,第五部分阐述了研究的体会与反思。
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Results: In vitro experiments, rabbit hair in 4 percent、6 percent、8 percent and 10 percent sodium sulfide depilatory respectively large dissolution in 9.17±0.48min、7.50±0.43min、4.67±0.38min、3.67±0.38min, In vitro experiments, these four depilatory unhairing completely in 8.50±0.50min、6.67±0.47min、4.67±0.47min、3.33±0.47min. In skin pathological section, epidermal was smallest injuried by 4 percent sodium sulfide depilatory and epidermal was greatest injuried by 10 percent sodium sulfide depilatory.
结果:离体实验中,兔毛在4%、6%、8%、10%硫化钠脱毛剂中分别在9.17±0.48min、7.50±0.43min、4.67±0.38min、3.67±0.38min时大量溶解,在体实验中,不同浓度的脱毛剂分别在8.50±0.50min、6.67±0.47min、4.67±0.47min、3.33±0.47min时脱毛完全;切片结果显示4%硫化钠脱毛剂对表皮的损伤最小,10%硫化钠脱毛剂对表皮的损伤最大。
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A large number of diagnostic experiments have been done using the special diagnostic program written by the author including several special-purpose simulation experiments for tolerance effects, and the tests of two practical circuits.
另一种方法适合于模块级故障诊断,避开了将非线性部分线性化的工作,除对无故障时的非线性电路要进行一次电路分析外,诊断过程可完全按线性电路进行,计算量小。
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So it is a effective prescription of protecting and treating AD.In our experiments, the model ras were administered D-gal intraperitioneal injection and β-Amyloid protein fragment_(1-40) into hippocampus. Mean well we used the technique of optical lens、 electron microscope、 immunohistochemical method, biochemistry and molecular biology.We studied the mechanisms that DR pretect and treat AD from the aspects of apoptosis、 inflammation injury、 oxidative injury 、 cholinergic neuron injury and the behavior experiments at cellar and molecular level.
本实验复制了D-gal腹腔注射合并Aβ_(1-40)海马定向注射AD动物模型,运用光、电镜技术及免疫组化、生物化学及分子生物学等先进检测方法,从行为学及细胞、分子水平探索地黄饮子对过氧化损伤、胆碱能损害、炎症损伤、细胞凋亡等相关调控因素影响的作用机制。
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The main research work of this paper are focused on following areas:(1) Based on review of the theory and methods on measurements of particle fields, a new idea for obtaining particle size and velocity distribution within a spray through imaging the particle field with a laser light sheet was put forward;(2) A DPIV (Digital Particle Image Velocimetry) system, is fit for velocity measurements of low speed flows, was developed and expended to particle size distribution measurement;(3) An arithmetic for particle velocity field reconstruction was developed, and the velocity distribution of water mist was also obtained;(4) A software system for particle analysis, which based on image geometry emend, de-noise and image partition was developed, the parameters such as particle size distribution, mean diameter, number of particles, minimum and maximum diameter can be got with this system;(5) A water mist system was developed and its characteristics, such as droplet velocity, size distribution, number of droplets and spray cone angle under different conditions were obtained from experiments with PIVS;(6) The measurement results of water mist characteristics with PIVS were compared and analyzed with the simply simulated results, and in addition, in order to verify the accuracy of PIVS, some experiments were conducted with the standard particles, such as glass-ball with known mean diameter of 50μm and 115μm, metallic coated tracing particle with mean diameter of 12μm;(7) Some experimental studies on interaction of water mist with liquid pool fires were conducted.
本论文的主要工作包括以下几个方面:(1)在对粒子场测量的相关理论和具体方法进行综述分析的基础上,提出了通过采用激光片光对粒子场进行成像以获取其粒径和速度等参数分布的新思路;(2)研制了适宜于低速流动速度场测量的DPIV(Digital Particle Image Velocimetry)系统,并使其实现了对粒子场粒径分布的测量功能;(3)研制了基于粒子运动轨迹的速度场重建算法,获取了细水雾雾场的速度分布;(4)研制了基于几何校正、去噪、图象分割等图象处理方法的"粒度分析软件系统",该系统既可分析给出粒子场的粒径分布直方图和平均粒径,还可给出粒子的数目以及最大、最小粒径等信息;(5)建立了一细水雾发生系统,并应用上述方法对不同压力条件下细水雾系统的雾场特性(如速度分布、雾滴粒径分布、雾滴的数目、喷雾张角以及雾化长度等)进行了实验测量研究;(6)对细水雾特性参数的PIVS测量结果与计算机简单模拟计算结果进行了定性比较分析,并利用平均粒径为50μm和115μm的玻璃球以及12μm的标准示踪粒子对PIVS系统的粒径和速度测量结果进行了实验验证,同时对其局限性进行了分析讨论;(7)对不同工况条件下细水雾与油池火相互作用的过程进行了模拟实验研究。
- 推荐网络例句
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This one mode pays close attention to network credence foundation of the businessman very much.
这一模式非常关注商人的网络信用基础。
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Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.
扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。
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There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.
双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。