计算
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Firstly, we research the Vlasov antenna with reflector mainly. A new method to calculate the radiation of the antenna is founded with Vectorial Theory of Diffraction, and the corresponding program is made. The reflective characters of Vlasov antenna are studied with Moment Methods, and the results show that the total reflected energy is less than 0.25%. The radiation patterns of the antenna are analyzed, and the formulas to estimate the wave beam parameters and to design the antenna are provided. The feasibility of radiating high-order modes by Vlasov antenna is also discussed and verified. The hermetization of the Vlasov antenna is researched and the results show that with such kinds of hermetization the antenna can work under gigawatt level. The design of the mode converter from TEM to TMoi is studied, which is useful when the TEM coaxial mode is radiated by Vlasov antenna. At last, the flared-end Vlasov antenna is also discussed.
在Vlasov天线方面:用矢量绕射理论建立了天线辐射场的计算模型并编写了计算程序,该程序计算结果在主瓣上与实验测量吻合良好,近旁瓣也基本一致;利用矩量法计算了天线的反射系数,表明该天线有较小的反射,总的能量反射小于0.25%;详细分析了天线的辐射特性,给出了天线辐射波束相关参数的估算公式和天线设计公式;进一步研究和论证了Vlasov天线辐射高阶轴对称模的可行性;对天线的密封方式和功率容量进行了讨论,结果表明在不需很大密封罩的情况下可以获得GW级的功率容量;为了用Vlasov天线辐射同轴TEM模,研究了TEM-TM_(01)模式转换器的设计,得到了一些基本规律;最后,介绍和分析了带有锥形喇叭的Vlasov天线。
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Calculation method of simply supported to continuous girder bridge is analyzed and compared with load test.
通过对预应力先简支后连续T形梁桥计算方法的研究,并与荷载试验进行对比分析,对预应力简支转连续结构设计计算的方法提出相关的建议,有利于减少计算误差,保证计算结果与实际情况相吻合。
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The computation model had 5 parameters, which could be identified by displacement inverse algorithm. At the same time, the ground deformation limits of highways to determine the engineering treatment scope of goafs were provided. On such a basis, the problem could be solved. Finally, a case of Lei-Yi highway was given. The computed results showed that the present method could successfully solve the ground deformation problems of goafs.
用编制的计算程序对来宜高速公路下覆典型的两种采煤形成的采空区坍塌后地面变形进行了计算分析,计算分析结果表明:随机介质理论计算模型应用比较成功,能反映地面移动规律;该处采空区对高速公路的正常使用产生威胁,宜进行适当的工程处理,并确定了工程处理范围。
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Based on the united calculation formulas, the corresponding computer programs and post-processors for pc computer have been developed, which can give the graph and table results of ground movement and defmation in any time.
七、根据所得到的统一计算公式,编制了相应的计算地表移动及变形的通用计算程序,移植开发了相应的后处理程序,使计算结果图形化,从而更加形象和直观。
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Firstly, affine covariant neighborhoods of visual words are used to verify the spatial consistency. Secondly, a set of affine transformation matrices between the corresponding covariant regions is calculated, and the matrix with the most inliers is chosen as the best matching affine transformation matrix. In this step, only a single pair of corresponding affine covariant regions is used to calculate the 6 degree of freedom affine transformation for acceleration. In the last step, the spatial consistency is verified by the BMATM.
首先通过视觉关键词仿射协变的空间邻近特征集进行初步空间关系一致性匹配;然后计算对应仿射协变区块的多组可能的仿射变换矩阵,并选择满足区块匹配最多的变换矩阵作为对象与图像之间最终仿射变换矩阵,其中,仅利用一对协变区块来计算自由度为6的仿射变换的算法有效地提高了计算速度和鲁棒性;最后通过计算出的仿射变换矩阵来精确验证对象与图像之间的空间位置关系是否一致。
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An assumed Gaussian tail is addedonto the HO distribution. The calculations for〓 of the protron-rich isotones 〓〓 and 〓 and for 〓 the neutron-rich isotopes 〓were finished by theGlauber Model along with the modified density distrution. The calculated resultsshow that d values of these nuclei along with the modified density distribution arelower than the calculated ones along with the only HO density distribution.
为减小Glauber模型计算的反应截面与实验值的差别,本论文还对Glauber模型的输入密度形式进行了修改,在原单-HO分布基础上加一个高斯分布的尾巴,并对丰质子的同中子素核〓及〓与〓靶以及〓和丰中子的C同位素核〓与〓靶的反应截面重新进行了计算,结果显示在中能区的计算值比原来单一密度分布的计算结构有明显改善。
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Based on present experimental formulae to calculate martensite starting temperature Ms of various steel grades, with analysis on the effect of alloying elements on Ms of steel, the experiential formula Ms = 550-330C-35Mn-17Ni-12Cr-21Mo-10Cu-5W-10Si-0Ti+10Co+30Al for maraging stainless steel is given in this paper.
本文依据马氏体时效不锈钢的化学成分及实测Ms温度,利用现有的Ms温度计算公式进行分析计算,提出新的马氏体时效不锈钢的Ms温度计算公式。1 现有Ms温度经验计算公式的分析影响钢的Ms点的因素很多,如化学成分、淬火冷却速度、奥氏体化条件、形变等[2 ] 。
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In daylights, in sunsets, in midnights, in cups of coffee.
计算晨光,计算日落,计算午夜的来临,计算喝下的咖啡
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Based on the analysis of the factors caused land subsidence, the internal mechanism and development process of land subsidence caused by two mainly factors of dewatering and underground mining have been studyed in this thesis. The random medium model and methods have been established to calculate the land subsidence and deformation caused by dewatering or underground minging and both of them. The prediction problem of land subsidence and deformation caused by single factor and many factors has been solved.
本文在分析引起地面沉降原因的基础上,针对引起地面沉降变形的主要因素——地下水疏降和固体矿物开采,分析、研究了其引起地面沉降变形的内在机理和发展过程,推导出地下水疏降和地下固体矿物开采引起的地面沉降变形计算的随机介质模型,给出了具体的计算方法和计算步骤,并将固体矿物开采和岩土体疏水等导致地表沉降视为相互独立的事件,解决了固体矿物开采和地下水疏降共同作用下的地面沉降变形的线性叠加计算问题。
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By using the said model, the mass flow of flue gas and steam can be calculated on the basis of temperature and pressure concerning the working medium at inlet and outlet of the boiler's heating surface, and the variated amount of the heating surface's thermal resistance can be calculated without using structural parameters of the heating surface.
由于简单换热器模型能够根据锅炉受热面进、出口处工质的温度和压力,计算烟气和汽的质量流量;可以不使用受热面的结构参数,计算受热面导热热阻的变化量。所以,采用该模型开发电站锅炉吹灰优化控制系统,能够解决传统方式存在的流量计算精度低、污垢热阻计算不准确等问题。
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力