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稳定化方法

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The research of both theories and practices of gridding in the dissertation shows that: Linear interpolation based on triangulation is simple computationally and fast, but its gridding results isn't smooth and its precision is low; Multiquardric method is also simple computationally with high precision and good effect, but its gridding is slow because it is based on global calculation; Minimum curvature method is fast with high precision and good effect, but its gridding quickly degrades over areas with sparse data control when grid spacing smaller than the actual grid spacing is used; Ordinary Kriging method is high-precision, but its gridding is slow because of large calculation; Inverse interpolation is a computationally fast, efficient and robust method with high accuracy and perfect effect, and its gridding results of different gridding orientations are basically identical. Inverse interpolation is suitable for thegridding of geophysical irregular data, especially for large-scale geophysical irregular data.

本文的方法研究和数据试验分析表明:基于三角网的线性插值法计算简单,速度快,但其网格化结果不光滑,精度不够;多元二次函数法计算简单,网格化精度高,效果良好,但它是基于全局计算的,计算速度较慢;最小曲率法计算速度快,网格化精度高,效果良好,但其在稀疏控制点的网格化容易出现振荡现象;普通克里格法网格化精度高,效果良好,但其计算量较大,一般计算速度慢;反插值法网格化计算稳定,速度快,精度高,效果好,而且在网格化方向不同的情况下其网格化精度效果都达到基本一致,适合于地球物理不规则分布数据的网格化,特别是大规模地球物理不规则分布数据的网格化。

Most of the China South Seas situated around the magnetic equator, belong to the low magnetic latitude area, where rocks are magnetized horizontally and the property of the Δ T is different with the other areas of Chinese Mainland.

我国的南海大部分海域位于磁赤道带附近,属于低磁纬度区域,以水平磁化为主,磁性体产生的Δ T 异常特征与中国大陆广大地区的Δ T 异常特征差别较大,且南北跨度大,达两千余公里,通常的化极技术在该区域很难取得良好的效果,虽然化赤方法在低纬度地区算法稳定,并通常能取得较好的结果,但是目前针对化赤异常的解释技术却相对较少;本文结合南海地区的航磁数据,对几种常用的化极技术进行了对比与分析,并对化赤技术进行了简要的介绍。

The operating range suitable for three-phase reaction was obtained and a mathematical model established. The results show that MSB formed by fine magnetizable powder and fliudizing flow can be operated stably in a wide range. MSB has three kinds of regimes: particulate, chain, and magnetically condensed. In these regimes, the chain regime is the best for three-phase reaction. When Ni-RE-P catalyst particles mixed with some iron powder, magnetically stabilization is easily achieved; therefore, it is possible that NiRE-P catalyst can be controlled in the bed for reaction more easilly if adding certain percentage of iron powder.

研究结果表明:细粉铁磁性颗粒形成的磁稳定床可在较宽流速范围内稳定操作,该磁稳定床有三种操作状态:散粒状态,链式状态和磁聚状态,其中有利于进行气液固三相反应的操作状态是链式状态;当磁稳定床在最小流化速度和带出速度之间操作时,床层处于链式状态;最小流化速度和带出速度可用(1-24)、(1-25)、(1-27)、(1-33)式计算;弱软磁性Ni-RE-P非晶催化剂中混入定量铁粉颗粒后便可形成磁稳定床,因此利用混入铁粉颗粒在外加磁场作用下控制弱磁性非晶催化剂颗粒进行反应的方法是可能的。

For further study to improve performance, an adaptive control algorithm based on Neural Network is tried in stabilization control. A new method of selecting the initial weights of Neural Network is put forward, which is that the coefficients of discrete equivalent of continuous transfer function in traditional control are used as the initial weights of Neural Network. Adaptive Neural Network control is combined with traditional control by using different method in different segment.

作为进一步提高稳定系统性能的探讨,对基于神经网络的参数自适应调整控制方法在稳定控制中的应用进行了研究,提出了将传统校正方法经离散化后所得到的数字控制算法的系数作为神经网络权值初值的新方法,并采用分段控制,将传统校正方法和神经网络控制方法相结合,取得了较好的控制效果。

The method is based on a variable structure to control the SVC, wherein, the variable structure control method comprises two aspects of the unbalanced load equalization compensation and the parameter control of a PI controller, wherein, the unbalanced load equalization compensation adopts the SVC compensation susceptance computational method which is based on the synchronous rotation reference coordinate transformation of a virtual symmetrical three-phase system; meanwhile, in the stabilization control of the system voltage, the ant colony algorithm optimization method is adopted to real time adjust and to optimize the parameter kp and ki of the PI controller.

本发明公开了一种静止无功补偿器的不平衡补偿和蚁群优化方法,基于变结构对静止无功补偿器SVC进行控制,其中变结构控制方法包括不平衡负荷平衡化补偿和PI控制器的参数控制两个方面,其中不平衡负荷平衡化补偿采用基于虚拟对称三相系统的同步旋转参考坐标变换的SVC补偿电纳计算方法;同时在系统电压稳定控制时,采用蚁群算法优化方法,对PI控制器的参数kp、ki进行实时调整、寻优。

Objective:The koji, production process and product index of North of Hunan unhusked rice wine and Middle Hunan rice wine were studied to give evidence for industrial production of unhusked rice wine; Methods: Glucoamylase activity, alcoholic fermentation activity, alcoholicity, all ester and the number of microbe were examined with ordinary ways; Results:The number of microbe and Rhiz.

目的:对湘北谷酒与湘中米酒酒曲、生产工艺以及成品酒指标进行比较,为谷酒的产业化生产提供依据;方法:采用常规方法测定、比较糖化力、酒化力、酒精度、总酯、微生物含量;结果:谷酒酒曲的微生物总数、根霉菌数糖化力与湘中米酒酒曲基本相同,但酵母数、酒化力略高于米酒酒曲;湘北谷酒的酒度、出酒率和总酯均高于湘中米酒,高级醇含量基本持平,感官指标优于湘中米酒;结论:谷酒较米酒的发酵工艺更合理,蒸馏方式更科学,产品质量更稳定;谷酒比米酒更适合大规模产业化。

Such a process includes the preparation of an initial stabilized peptized solution including a titanium precursor material, an organic solvent, an acid agent, the mixing of said initial solution with a large amount of water, the pH of the obtained intermediate solution being less then 3, subjecting said intermediate solution and its dispersion to a heat-treatment, the exchange of water by an organic solvent with low surface tension to obtain a final solution that is finally dispersed.

这样一种方法包括制备包含钛母体材料、有机溶剂、酸介质之开头的稳定化胶溶溶液,将此起始溶液同大量水混合,所得到中间溶液的pH小于3,使此中间溶液及其分散体系经受热处理,用低表面张力的有机溶剂更换水来获得末了加以分散的最终溶液。

The primary purpose of this book is to present a fundamental approach to stabilization of polymers.

本书的主要内容是介绍聚合物稳定化的基本方法。

Colloidal chemistry: Know preparation, purification, and stabilization of colloids.

了解胶体的制备、净化、稳定化的方法和原理。

In the dissertation, a new stabilization method, equal-density method was adopted to prepare modified asphalts with storage stability at high temperature. In this method, a compound was prepared by premixing polymer and filler, and the compound was mixed with asphalt to prepare Polymer-Modified Asphalt by changing the ratio of polymer and filler. The asphalts with good storage stability were formed with the addition of filler, by regulating the density difference between polymer and asphalt. With identifying the effect of composition factor and the technique conditions on mechanical properties of polymer/filler compound and the molecular distribution of the polymer, identifying the effect of composition factor and the technique conditions on the properties and structure of polymer/filler modified asphalt, Styrene-Butadiene-Styrene copolymer, Low Density PolyEthylene, Styrene-Ethylene-Butadiene-Styrene block copolymer modified asphalts with good storage stability and performance were prepared. Rheological method, gel content analysis and swelling measurement were adopted to elucidate the interaction between the polymer and filler. Filler reduced the difference between the polymer and asphalt with the premixing technique, which led to the improvement of the storage stability of the modified asphalts. The thermo-oxidative aging process of base asphalt and PMA were studied and the effect of antioxidant additives on the base asphalt and PMA were analyzed.

本论文采用等密度方法,即预先混合聚合物与填料制备复合物,复合物在沥青中会吸收油份而溶胀,改变填料的用量从而调节聚合物与沥青的密度差异的方法,制备出高温贮存稳定的改性沥青,并研究了工艺条件和配方因素对聚合物/填料复合物力学和聚合物分子量分布的影响,系统考察了工艺条件和配方因素对聚合物/填料改性沥青性能与形态结构的影响,研制出性能优良、高温贮存稳定的苯乙烯-丁二烯-苯乙烯三嵌段共聚物、氢化SBS、低密度聚乙烯改性沥青,并通过流变学分析方法及凝胶和溶胀测试探讨了聚合物与填料的相互作用,指出经过预混工艺填料改变了聚合物与沥青的密度差异,以此说明聚合物/填料改性沥青高温贮存稳定的原因;研究了基质沥青和聚合物改性沥青热氧老化过程,并分析了抗氧剂对基质沥青及聚合物改性沥青的影响,探讨了抗氧剂提高沥青耐老化性能的原因。

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推荐网络例句

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在,'歼灭战perfuming自己与胡努特,那麼,他来到和SAT 。

The shamrock is the symbol of Ireland and of St.

三叶草是爱尔兰和圣特里克节的标志同时它的寓意是带来幸运。3片心形叶子围绕着一根断茎,深绿色。