辐射的
- 与 辐射的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Then the boundary element integral equation of interior and exterior form is deduced in detail, also the form with corner coefficient. The significance for numerical calculation and principle of the singular integral is analyzed, and a non-isoparametric transformation method is presented to calculate weak singular integral and Cauchy integral, the method presented provides us a very simple way to computer the two kinds of singular integral of Helmholtz boundary integral equation, and it is easy to program in computer. After the difficulty of the calculation for multi-frequency of Helmholtz boundary element is explained, a method named SECHIEF (Series Expansion Combined Helmholtz Integral Equation Formulation), which is focused on the computational efficiency, is presented.
对结构声辐射的边界积分方程的内部形式与外部形式进行了详细的推导,给出了角点系数的计算方法与边界积分方程的形式,在此基础上,分析了奇异积分产生的原理及其对数值计算的重要性,提出了一种计算奇异积分的非等参(来源:Ae8a8BC论文网www.abclunwen.com)单元的变换方法,该方法给Helmholtz 声学边界积分方程中的弱奇异积分与Cauchy 奇异积分的计算以及编程提供了极大便利。
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In the analysis, firstly, the flux boundary condition is used to simulate the frictional heat resource between wheel and rail. The non-steady heat transfer between the contacting surfaces of the wheel/rail, heat-convection and radiation between the wheel/rail and the ambient were all taken into consideration. Therefore, a heat coupling model of the wheel/rail in rolling/sliding is put forward to calculate the frictional temperature rise in the wheel and rail. Secondly, after the temperature distribution of wheel/rail, due to friction, is calculated, substitute the thermal load with equivalent fictitious body force and boundary distributed force loaded on the nodes of the corresponding elements. The wheel-load is applied to the center of the wheel.
首先,用热流边界条件模拟轮轨接触界面的摩擦热源,考虑轮轨间的非稳态热传导、轮轨自由表面与环境的热对流、热辐射的影响,建立轮轨滚动接触热耦合有限元计算模型,分析计算轮轨滚、滑工况下的摩擦温升;其次,以求得的轮轨温度场结果作为求解轮轨应力场的已知条件,轮载以集中力形式直接加载于轮心处,将摩擦温升引起的热载荷等效为假想体力和热边界面力,施加于相应的单元节点上,建立了轮轨热—机械载荷耦合作用的热弹性平面应力模型,分析热—机械载荷作用下的轮轨应力场。
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Taking one with another,Glamor's LED products are in excellent quality,ingenious design,energy saving and environment protection.Our LED products is continuously used in park decoration of world,City brightness,Advertising,commercial venue,public bulding,ornament of human cultural sight and so on. Now our products rapidly infiltrate to Familial illumination life.It is obviously that high energy consumption lights will be replaced by High brightness,low energy consumption, long life span, non-radiation LED illuminating products more and more. Glamor Optoelectronic Technologies Co.,Ltd made great contribution for the proper development of LED industry .
格林曼生产的产品品质优异,科技含量高,设计精妙,节能环保,现正在源源不断的被用于全世界各地的公园装修、都市亮化、广告宣传及商业场馆、公共建筑物、人文景观的装饰和美化上,而且我们的产品正迅速的渗透到家庭日常照明生活中,高亮度、低耗能、长寿命、无辐射的LED照明产品取代传统高耗电量灯具的趋势越来越明显,格林曼光电科技为推动行业健康正确的发展作出了巨大的贡献。
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Secondly, based on a lot of experiments, the method to obtain visual information during aluminum alloy pulse TIG welding is presented. According to the intensity and spectrum distribution of TIG arc of aluminum alloy, the composited wideband filter system were developed to overcome the arc disturbance to weld pool images.
通过大量的实验,探索了铝合金脉冲TIG焊条件下熔池视觉信息的获取方法,根据铝合金TIG焊弧光辐射的强度分布和光谱分布特点,利用熔池反射电弧光的低强度的连续光谱作为照明光源,设计了宽带复合滤光系统,克服了铝合金表面反射的高强度电弧光对熔池视觉信息的干扰。
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Results: Compared with the C group, the contents of CORT in blood and ACTH in pituitary gland are increased at the different time points. Compared with the C group ,the contents of CR11 in Hypothalamus are enhanced in S and SAI groups on list but those are reduced in S and SM groups on 16st and 21st. Compared with the S group ,the contents of CORT in blood and ACH in pituitary gland are increased in SM group on 11 at. Compared with the SM groups, the contents of CORT in blood are reduced in TKXLD groups on 11st, l6st and 21st. Compared with the SAT group respectively, the contents of CRH in Hypothalamus are decreased in TKXLD group on list and those in TKXLD group are increased on 16st and 21st.
结果:实验第11、16和21天悬吊组和悬吊加辐射组大鼠血清CORT和垂体ACTH含量高于正常组;悬吊组和悬吊加辐射组大鼠下丘脑CRH含量在实验第11天高于正常组,在实验第16天和21天低于正常组;实验第11天悬吊加辐射组大鼠血清中CORT的含量高于悬吊组;实验第11、16和21天,中药组大鼠血清CORT含量低于悬吊加辐射组,垂体ACTH含量低于悬吊加辐射组;中药组大鼠下丘脑CRH含量在实验第11天低于悬吊加辐射组,在实验第16天和21天高于悬吊加辐射组。
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It cannot be supplanted in special fields such as a monochromator crystal for a synchrotron X-ray radiation beam, anvils of DAC, and the optical parts of some quipments.
a型金刚石在一些特殊的领域的应用是不可替代的,如X射线同步辐射的单色仪,DAC高压设备中的金刚石对顶砧,以及一些仪器的透光部件。
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We note from the further studies that in the crystals, which sharing the similar crystal structures and coordinational environments, the magnitude of the Stokes shift of the luminescence of the dopant ion is in line with the average covalency of the replaced lattice site. This is because that the nature of Stokes shift is the energy transfer from the luminescent ion to the host lattice. The value of this energy is determined by the frequency of the host lattice in which the frequency is controlled by the chemical bond characters.
更深入的研究发现,在晶体结构和中心离子配位环境非常相似的系列晶体中,掺杂离子发射光的Stokes位移值与其所取代格位的平均共价性成正比的关系,这是由于Stokes位移的本质是发光离子在发光过程中向基质以光波辐射的形式传递能量,这一能量的大小是由基质的振动频率决定的,而基质的化学键性质恰恰决定着基质的振动频率。
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The three antennas which receive VHF impulses emitted by a lightning discharge are placed on the vertices of a right-angled isosceles triangle with perpendicular sides 120 meters in length.
三个接收天线(接收闪电放电辐射的超高频脉冲)分别放在一个垂直边长为120米的直角等腰三角形的顶点,由到达天线的时间差来计算接收到的闪电脉冲的方向。
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In section one, by using FICE scheme and TIME-GCM, a model of trace gases and OH airglow affected by gravity wave is set up, then the propagation of nonlinear gravity wave and the effect on trace gases and OH airglow are analyzed. The result shows gravity wave excited by tropospause forcing can propagate stably to the mesosphere through the stratosphere so that energy and momentum can be transferred from one region to another. In this process, gravity wave undergoes growth, overturning, convection and breaking. And the no-isothermal structure can accelerate the breaking of gravity wave in mesospause, and the breaking of gravity wave is an important source of convection and small-scale waves.
在第一部分的工作中,利用全隐欧拉格式和全球热层-电离层-中间层-电动力学环流耦合模式,对重力波的非线性传播及其在传播过程中对中高层大气中氧族和氢族成分和与之密切相关的OH气辉辐射的影响进行了数值模拟,结果表明,从对流层向上传播的重力波经历了产生、发展、饱和、对流产生直至破碎的非线性演化,大气的非等温结构加速了重力波在中层顶区的破碎,重力波的非线性传播是小尺度对流和湍流产生的一个重要的源。
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In section one, by using FICE scheme and TIME-GCM, a model of trace gases and OH airglow affected by gravity wave is set up, then the propagation of nonlinear gravity wave and the effect on trace gases and OH airglow are analyzed. The result shows gravity wave excited by tropospause forcing can propagate stably to the mesosphere through the stratosphere so that energy and momentum can be transferred from one region to another. In this process, gravity wave undergoes growth, overturning, convection and breaking. And the no-isothermal structure can accelerate the breaking of gravity wave in mesospause, and the breaking of gravity wave is an important source of convection and small-scale waves. The propagation of gravity wave will affect the distribution of minor species.
在第一部分的工作中,利用全隐欧拉格式和全球热层-电离层-中间层-电动力学环流耦合模式,对重力波的非线性传播及其在传播过程中对中高层大气中氧族和氢族成分和与之密切相关的OH气辉辐射的影响进行了数值模拟,结果表明,从对流层向上传播的重力波经历了产生、发展、饱和、对流产生直至破碎的非线性演化,大气的非等温结构加速了重力波在中层顶区的破碎,重力波的非线性传播是小尺度对流和湍流产生的一个重要的源。
- 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